How many problems does the 2019 GMC Terrain have?

The 2019 GMC Terrain currently has 159 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2019 GMC Terrain?

The most common problems reported for the 2019 GMC Terrain are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2019 GMC Terrain problem data come from?

All problem and complaint data for the 2019 GMC Terrain comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

2019 GMC Terrain Problems

SERVICE BRAKES

19 complaints

Failure of the cam driven vacuum pump causing brake failure. Leading to a hard brake pedal which increases risk of a crash. Debris from the broken vacuum pump can fall down into the engine causing a catastrophic failure of the engine needing a replacement. This happens with little to no warning. Warranty companies will not pay to repair the known issue. A recall needs to be issued for this to provide a fix. This is a family suv and I do not feel safe putting my children in a vehicle that can endanger their lives and safety.

Dec 16, 2025

When approaching a stop sign, the brake pedal became extremely hard I was unable to stop, and rolled through the intersection avoiding collision. I was able to slow down enough to engage the emergency brake. There are no lights on the dash.

Oct 21, 2025

I was backing out of the driveway, and it was extremely hard to brake enough to stop the car. I immediately parked back into the driveway. I had to stand on the brake to completely stop. Vacuum pump was completely busted and in many pieces.

Oct 04, 2025

Vacuum pump broke and car has no brakes

May 18, 2025

While driving the breaks completely locked up and the smell of exhaust entered through vents. Ran a code machine indicating that the break booster power vacuum pump was needing replaced. There are no other issues with my vehicle that would cause it to malfunction out of no where.

May 12, 2025

+ 14 more complaints for this component

POWER TRAIN

16 complaints

The GMC Terrain P187E transmission code indicates a problem with the transmission senor or shift interlock. It prevented our car from shifting into park. The car won't start now. We had to disconnect the battery because the car would not stop beeping. Milage is only 22000 miles and we have owned it for less then 2 months. It is a 9 speed transmission which I understand this to be an on going issue with this transmission.

Aug 25, 2025

The contact owns a 2019 GMC Terrain. The contact stated upon taking the vehicle to the Nissan dealer where it was purchased for an oil change, the dealer informed the contact that there was a crack in the transmission. The vehicle was then taken to a GMC dealer, where the contact was informed that the crack was more than two months old. The dealer determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 38,700.

May 27, 2025

The contact owns a 2019 GMC Terrain. The contact stated that occasionally while driving at various speeds, the vehicle independently shifted into neutral(N) and the vehicle lost motive power while the accelerator pedal was depressed. In addition, the vehicle had shifted from park(P) to drive(D) and into neutral(N). There was no warning light illuminated. The vehicle was taken to a local dealer, where it was diagnosed; however, the cause of the failure was not identified. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 45,000.

Apr 30, 2025

While driving the car went into power save mode and completely shut down. There were no prior lights or warnings that the car was having issues. While driving at 45mph on a busy road it just suddenly shut down. It would not move to get it out of the road. I was almost hit from behind. After the car was towed, it was diagnosed as a broken vacuum pump and exhaust camshaft. Our Terrain only has 67,773 miles at the time of the incident which was unfortunately just outside of warranty. Since this incident and the repair, the car has had to go back to the shop 4 times. It is still not driving correctly and stalled as I pulled out onto a main road almost causing an accident. Still working on getting it diagnosed and repaired correctly. The mechanics I have spoken to indicated this engine/car is known for these issues. Without any warning lights or signs of issues prior it really put us in a dangerous situation.

Mar 26, 2025

First the car started jerking while drive over 50mph, next day driving down the street and the car shut off, stating loss of power. I replaced the battery, it was giving battery low codes, only to get a certified mechanic say the timing chain was out. Just purchased the car in March 2022.

Apr 22, 2024

+ 11 more complaints for this component

ENGINE

15 complaints

I was driving home from vacation the vehicle went into limp mode and started to run very poorly with a brake pedal that was almost impossible to push. I limped the vehicle a couple of miles to the next exit. I had the car trailered home and taken to a service center the following Monday. They inspected the vehicle and found the vacuum pump had failed and caused what was described as “catastrophic engine failure.” They are now saying it needs a full motor replacement due to the widespread and severe damage. This is not the first time this pump has been an issue or supposed issue. About a year before this incident a month after we bought the vehicle in used condition from a GM dealership it started making a noise. We took it back to see if they could help us out being that it was recently purchased and they diagnosed it as the vacuum pump making the noise. They wanted almost $800.00 to replace it. I googled a video on how to fix it and found the cost of the part. The part itself is between $75-$90 from local and name brand parts stores. I paid the $250 diagnostic fee and took it somewhere else for a second opinion. The GM dealership pushed hard for the vacuum pump replacement and told me it was a well known issue for that part on that motor in many different makes and models. They said they recommend you change that mechanical part out every 80k miles or so and that you do not go by what the owners manual says for oil changes which is 5k miles and instead do that every 3k miles. That should not be “preventative maintenance.” That is a manufacturer issue. This should be a recall on the pump. I again did research and this vacuum pump is a known issue. You can find endless examples and discussions about it. It turned out not to be the pump originally that was making the noise saving me $800. The service center that has it now has all the pictures and pieces to show it’s failure and damage. It’s unsafe for something $85 dollars to cause that while driving at any time.

Oct 20, 2025

The contact owns a 2019 GMC Terrain. The contact stated that while driving at an undisclosed speed, the vehicle hesitated, with the check engine warning light illuminated. The contact stated that the warning light turned off after approximately three miles of driving. The contact also stated that the vehicle experienced abnormal RPM fluctuations while driving. The vehicle was taken to an independent mechanic, where it was diagnosed; however, the diagnostic information was not provided to the contact. The vehicle was not repaired. The vehicle was then taken to the dealer but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 117,951.

Oct 16, 2025

I was driving this morning and my car put itself in neutral. I think had to pull off to the side because it was not accelerating. I could get it to go over 20 mph. Every time I tired to accelerate. The engine would feel forced.

Jul 21, 2025

The contact owns a 2019 GMC Terrain. The contact stated while driving 25 MPH, there was an abnormal sound coming from the engine. The low power message was displayed. The contact pulled over to the left side of the road and waited for towing assistance. The contact attempted to restart the vehicle; however, the vehicle failed to respond as intended. An independent mechanic was contacted. The vehicle was towed to an independent where it was diagnosed that timing chain, timing gears, the vacuum pump, cam phasers, and sensors all needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The contact was referred by the manufacturer and was informed to contact NHTSA to report the failure. The failure mileage was unknown.

Jun 10, 2025

Faulty vaccuum pump blew leading to engine failure. On the highway randomly, with my child in the vehicle. This almost caused a huge accident. I’ve kept up on all maintence and oil changes. This has been a huge effect on my life as I’m a single parent and randomly had to spend thousands on a new engine for zero fault of my own. I’ve read many many people having this issue. Something needs to be done and action needs to be taken!!!!!!!!

Mar 13, 2025

+ 10 more complaints for this component

SERVICE BRAKES,ENGINE

10 complaints

Driving approximately 70mph on interstate. Came to a slight hill, gently applied brake pressure, brakes become hard to apply/would not apply. After diagnostics, found Brake Vacuum Pump with damaged fins.

Oct 12, 2025

Vacuum pump failed causing hard brake pedal and the inability to properly stop the vehicle. Thankfully I made it to a safe area and had the vehicle towed. No warning light or engine service lights ever illuminated. Once it was taken apart the bearings were disintegrated and metal shavings are in engine components.

Mar 02, 2025

I was riding on the freeway when my brakes failed. i was not able to press down on my brakes with zero warning. I had to swerve to miss cars and pull on the shoulder of the freeway and my car still would not slow down. I finally got from 65 to 35 and pressed on my emergency brakes. I stopped the vehicle then my engine light came on and I got my car towed to the car shop where my car would not stop and suffered internal damage to my engine from the brakes and vacuum pump

Oct 24, 2024

on two occasions the vacuum pump booster failed causing the vehicle to lose braking ability while traveling on a highway at highway speeds. The vehicles brake completely failed and were unable to be engaged. the part was initially replaced by the dealer at the owner's expense and then the same issue occurred only a few months later. the second occurrence cause additional damage to the camshaft and timing chain causing the vehicle to not even be able to start. The vehicle was inspected by the servicing dealer and found metal shavings in the oil as well as extensive damage to the engine.

Jul 29, 2024

Vaccumm pump failed and broke metal shavings off into engine resulting in “engine failure”. I was driving on the highway with my 6 year old child in back seat, car completely shut down and shot a “reduced engine power” message while on a busy on ramp heading onto highway. This created an extremely dangerous situation for myself and my child as many cars almost smashed into the vehicle. I’ve seen many other complaints of this happening, the same exact parts and issue happened to the Chevy Equinox which resulted in a recall but they have yet to recall the Terrain, which is having the exact same issue. I am a single mother, with 20k still on my loan. This mistake made by gmc has now costed me over 5,000$ out of pocket for something that is not my fault and completely out of my control. Even after all of the money poured into this repair, I still feel unsafe in my own vehicle as there is no guarantee this issue will not happen again. I’ve kept up on all oil changes and maintenance of my vehicle. The issue was confirmed by a GMC mechanic which cost 500$ out of pocket for diagnosis as well. I also had to spend 1000$ on a rental out of pocket because of this. I have seen many others complaints of the same issue happening to their GMC terrain and am appalled no recall has been discussed after the reaccuring issue. I should not be having to pay out of pocket for an issue GMC has yet to fix or issue a recall on. I had to miss days of work, and it really was a huge inconvenience. I do not feel safe in my own vehicle even after the repair, cause I have no guarantee this won’t just happen all over again.

Apr 22, 2024

+ 5 more complaints for this component

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

9 complaints

I bought this Terrain brand new from Betten Baker Chevrolet in Muskegon Mi in 2019 with 500 miles. That same year we had transmission Slippage causing it to slip out of gear then slam back into gear while driving. I took it to the dealer to have it looked at. They did nothing and informed me it was known by the manufacturer that this was an issue. I then had to bring it back for electrical issues as the lights would all start going off in the cab including dome lights and shift buttons. All key fob would not be recognized by the car and would have to be reprogrammed counting 5 times now. Now I am sitting at just oflver 100,000 miles and what I thought was going to be a simple spark plug change gas turned into a complete motor failure. did an oil change and there was no oil in it. The turbo was replaced and now the engine started making a lot of rattling noises and just stopped. the dash says service transmission, ECS, Extremely low battery voltage and has jost die after oil started pouring out the bottom of the car. It is now sitting at the dealership service department where I was told by am employee there that they have been seeing them come in at 150,000 miles for complete rebuilds and mine was early. let me tell you that this car isn't even paid off yet. And the 2006 Ram 1500 is more reliable.

Dec 05, 2025

When trying to accelerate, the car will not accelerate. It will start to jerk back and forth and I had cut it off completely in the middle of the road at a stop light.

Jun 20, 2023

*Check engine light on, engine power is reduced is on, vehicle is surging up and down while in idle, vehicle stalled in service while in park. Charge air cooler tube to the throttle body spring retaining clamp tension weak. Verified charge air cooler tube came off throttle body. Inspected spring retaining clamp. Found spring retaining clamp tension weak. Installed new spring retaining clamp. Charge air cooler tube to throttle body now properly secured *Vehicle power / engine power was reduced while on the highway *Problem has been confirmed by LaFontaine of Ann Arbor, MI *Vehicle was inspected at LaFontaine of Ann Arbor, MI *Engine light came on and the Engine power is reduced message appeared on the dash.

Jul 12, 2021

*Trans clutch drag recall *While driving, it would take a minute to shift gears and the vehicles behind me would ride up on the back of my car until it would shift into the next gear and pick up speed to do the speed limit. *Took the Terrain to aFontaine in Ann Arbor, MI and the service center reprogramed the Transmission Control Module and setup with SPS 0.7 *Yes, the vehicle was inspected by LaFontaine dealership in Ann Arbor, MI *No warning messages, I could hear the transmission not shifting when it should be. The transmission problem starting happening in Sept 2019 and brought it into the dealership in Oct 2019.

Jul 10, 2021

*Check Engine Light on, Short to Voltage inside Hood Switch Setting P257F. Switch Must Be Replaced, Recall N192216311 Cust May be Able to Shift Out of Park OP 9104813 Reprogram ECM .3 WCC 11YN37748687 *Scared to drive vehicle when the hood switch was the problem. Did not want to driveon the road and the hood fly up and I would be unable to see out of the front windshield. *Yes, vehicle inspected by LaFontaine in Ann Arbor, MI. *Vehicle was inspected by LaFontaine in Ann Arbor, MI. *Engine Light was on.

Jul 10, 2021

+ 4 more complaints for this component

ELECTRICAL SYSTEM

9 complaints

Back up camera service notice.

Jun 10, 2025

Backup camera stopped working, giving me a blue screen

Dec 09, 2024

The Infotainment System started acting strange. The volume adjusts itself. It starts blaring very loudly and has nearly caused several collisions and it continuously turns on and off. I can not use it at all.

May 28, 2023

When I’m reverse screen shows blue and message says “service rear camera system” I purchased this car NEW in 2019 and warranty just expired. I have read so many forums with this being a common problem with gmc. Why this isn’t covered and over $600 coming out of my pocket to fix it is ridiculous. This is a safety issue and gmc flaw and should be corrected/covered by them.

Oct 11, 2022

A COUPLE WEEKS AGO I GOT IN MY 2019 GMC TERRAIN AND SHIFTED INTO REVERSE AND MY BACK-UP CAMERA WAS NOT WORKING. IT WAS A BLUE SCREEN THAT SAID "SERVICE REAR VISION SYSTEM". A COUPLE DAYS LATER IT STARTED WORKING AGAIN. MY CAR SAT FOR A WK AND I GOT IN IT ON MAY 28 TO HELP MY DAUGHTER MOVE AND IT WASN'T WORKING AGAIN. THIS IS A SERIOUS SAFETY ISSUE NOT ONLY TO ME, BUT TO ANYONE (LIKE MY GRANDKIDS) OR ANYTHING BEHIND MY CAR AS I'M BACKING UP, ESPECIALLY IF I CANNOT SEE THEM.

Jun 01, 2022

+ 4 more complaints for this component

POWER TRAIN,SERVICE BRAKES,ENGINE

7 complaints

While working out of town for work my engine light started flashing and the dash lights went nuts. My brakes were nonexistent and were hard as a rock. I had zero warning as to what happened. Working 3 hours away from home the car had to be towed and I was informed the engine code came back as my cam shaft. Took it to the dealer as Gm has a bulletin put out. I didn’t know what that meant. Long story short and 3000.00 dollars later I find out that the vacuum pump exploded which cause the cam shaft to fail. I was out of work for almost a month. There is a recall for almost all vehicles from this year but not the 2019 terrain even though it contains the same vacuum pump as all the recalled makes and models. Vacuum pump, cam shaft, oil pan, oil pump had to all be replaced at under 100,000 highway miles. Someone needs to address this problem.

Sep 10, 2025

Brake vacuum pump premature failure. As you see GMC, terrains, in Equinox, I have an issue, while the engine it's on while driving etc, if this bark fails, you will have an issue I'm trying to stop. This is a known problem or GM. And as of now, they have not come out with a solution or a recall for this problem. This problem has caused many customers. To lose thousands of dollars, he repairs. I'm not covered by the warranty. This should be addressed and repaired as soon as possible as it may cause someone else to lose their life. Second problem is the 9 speed transmission transmission lack power when trying to gain speed as you enter the highway. Lastly they blamed the selenoids etc. Lastly the pulley belt retention broke down premature with only 68k miles. This is an ongoing problem gm is well aware and tries to hide or fix. When someone buys a vehicle we expect to last longer than 100k miles.

Aug 15, 2025

Driving home from dropping my daughter off at school. When slowing down at stop sign, car locked up brakes completely, almost went through stop sign, car shut down engine and placed vehicle in park. Diagnosis is a vacuum pump failure, causing reluctor wheel to spin freely from camshaft. This happened without warning at 70k miles. Diagnostic report from three weeks prior showed no bad diagnostics with engine or drivetrain components, or brake components. Had to have car towed from intersection where i was impeding traffic due to sudden failure. Garage is concerned regarding potential for debris and engine damage, as well as timing issues due to sudden failure of vacuum pump. GM has authorized vacuum pump recalls on other makes from prior years, not Terrain for some reason. This is how becoming highly reported failure among GMC/Chevy vehicles with shaft driven vacuum pump design between 2019-2022. GM has stopped using this design on 23 and newer models. They should absolutely recall these older models for this issue. Sudden vacuum pump failure can lead to unrepairable engine damage due to design.

Jan 16, 2025

My daughter was driving her 2019 GMC Terrain at 15 - 20mph when she suddenly lost her brakes. Fortunately she had just turned into a new housing development where the road ended into an empty field. This could have been catastrophic for her & other citizens on the road. The following morning she would have been heading to work on a highway with heavy traffic with a posted speed limit of 65mph. We towed the vehicle home & after some investigating I found a vacuum pump failure. This vacuum pump broke apart internally sending chunks & shards of metal into her valve train. This issue is mentioned several times in Terrain forums & someone needs to address this issue before it becomes a fatality.

Jun 28, 2024

My 2019 gmc terrain, vaccum pump failed at about 45000 miles, was driving on the highway and brakes were hard to stop, almost crashed. About 52000 miles, vacuum pump failed again, also while driving on the highway. Brakes were hard to stop, again almost causing me to crash. 69000 miles again vacuum pump failed while driving on the highway, again almost causing me to crash. All times pump was replaced under warranty and now this has caused my engine to fail. i was denied factory warranty, pre certified and extended warranty. Now im stuck with a car with with three years left to pay on it

Nov 21, 2023

+ 2 more complaints for this component

UNKNOWN OR OTHER

7 complaints

Sunshade is not rolling back and has come off the tracks obstructing rear view and I am unable to drive the vehicle

Jun 27, 2025

While driving under normal conditions the panoramic sunroof shattered. This is a serious safety issue and obviously a problem with the manufacturing of the tempered glass

Apr 03, 2025

Rear camera turned to blue screen at 37,000 miles. Module died.

Apr 20, 2022

Carfax report showed that Air bag deployed in the accident on 3/22/2019. Which is wrong information. The car was repaired through state farm authorize body shop. The effect part was front bumper, grill , left side head ligh and left fender.

Sep 25, 2021

Crash: 1

CAR HAS LESS THAT 1000 MILES AND THE CHECK ENGINE LIGHT HAS BEEN ON 3 TIMES WITH A P0442

Apr 25, 2019

+ 2 more complaints for this component

BACK OVER PREVENTION

7 complaints

The contact owns a 2019 GMC Terrain. The contact stated while reversing the vehicle, the display screen failed to display an image and was instead displaying a blue screen. The backover prevention system warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 55,000.

Jan 07, 2025

The contact owns a 2019 GMC Terrain. The contact stated that while reversing, the rearview camera displayed a blank image. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.

Dec 31, 2024

The contact owns a 2019 GMC Terrain. The contact stated that while in reverse(R), the back-up camera failed to operate as needed with the display screen displaying a blue image. The "Service Rear Vision System" message was displayed on the instrument panel. Neither the dealer nor the manufacturer was notified about the failure. Upon further investigation, the contact related the failure to Technical Service Bulletin: 19-NA-076. The vehicle was not repaired. The failure mileage was approximately 88,000.

Dec 12, 2024

The contact owns a 2019 GMC Terrain. The contact stated that occasionally while the vehicle was shifted into reverse, the back-up camera failed to display an image behind the vehicle as intended. The contact stated that the display screen turned blue. The local dealer was contacted, but the vehicle was not diagnosed or repaired. Upon further investigation, the contact related the failure to Technical Service Bulletin: 19-NA-076. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,000.

Dec 06, 2024

When I place the vehicle in reverse, my backup camera is not working, resulting in a blue screen with a message to have the camera serviced. Per the GMC dealership, this is a common problem with many of the newer GM vehicles and is a safety item due to not having a clear view of what is behind me. I purchased this safety feature and it not working.

Sep 13, 2022

+ 2 more complaints for this component

SERVICE BRAKES, HYDRAULIC

5 complaints

The contact's wife owns a 2019 GMC Terrain. The contact stated while driving 70 MPH and depressing the brake pedal, the brake pedal was firm, and the vehicle failed to respond as needed. The check engine warning light was illuminated. The contact stated that upon depressing the brake pedal with excessive force, the vehicle responded as needed. The contact stated upon inspecting underneath the brake booster, the contact noticed a lot of debris due to lack of vacuum pressure. The dealer and the manufacturer were notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 80,000.

Jun 09, 2025

The contact owns a 2019 GMC Terrain. The contact stated while driving 30 MPH, the brake pedal was depressed, but the vehicle failed to stop immediately. The contact slammed on the brake pedal, and the vehicle came to a stop. The contact coasted the vehicle to the median. The vehicle was restarted and driven to the residence. Upon inspection, the contact noticed that the brake fluid was dark in color. The vehicle was taken to an independent mechanic, who diagnosed that the vacuum pump had failed and exploded in the camshaft. The vehicle was then towed to the dealer, where it was determined that the vacuum pump, camshaft, valve cover gasket, and water pump needed to be replaced, along with an oil change. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 120,000.

May 16, 2024

The contact owns a 2019 GMC Terrain. The contact stated while driving 10-12 MPH and approaching a traffic light, the brake pedal was depressed, but failed to respond and went down to the floorboard. There was no warning light illuminated. The contact stated that she continuously pumped the brake pedal until the vehicle stopped. The contact veered to the side of the road. The "Low Brake Fluid" message was displayed, and other unknown warning lights were illuminated. The contact added brake fluid to the vehicle. The contact stated that she turned off and restarted the vehicle. The dealer was notified of the failure and advised the contact to take the vehicle to their location for a diagnostic test. A tow truck driver informed the contact that the brake caliper was fractured and there was a puddle of brake fluid on the ground. The vehicle was towed to the dealer, where it was diagnosed that the brakes hardware had failed, the brake caliper was fractured, and the brake sensor and actuator had failed. The dealer then informed the contact that the manufacturer was contacted and advised that they would only cover the brake caliper, pads, and rotors replacement. The vehicle was not repaired. The failure mileage was approximately 40,000.

Jun 21, 2023

The contact's client leased a 2019 GMC Terrain from Hertz Leasing Company. The contact stated while her client was driving approximately 60 MPH, the brake pedal was depressed but failed to go down and did not respond. The brake assist warning light was illuminated. The contact stated that her client continued driving and allowed the vehicle to decelerate independently. The contact's client then veered to the side of the road. There was no further information provided. The vehicle was returned to Hertz leasing company who later informed the contact's client that the vehicle had been diagnosed with brake vacuum pump failure. There was no further information provided. The manufacturer was not notified of the failure. The failure mileage was approximately 42,000.

Nov 29, 2022

The contact owns a 2019 GMC Terrain. The contact stated while approaching an intersection, he depressed the brake pedal to the floor however, the vehicle failed to stop immediately. The contact stated no warning light was illuminated. The contact stated that the brake assist activated and stopped the vehicle. The contact was able to continue driving to his residence at a slower speed. The contact towed the vehicle to the local dealer, where it was diagnosed with needing the vacuum pump to be replaced. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 84,400.

Jul 12, 2022

ELECTRONIC STABILITY CONTROL (ESC)

3 complaints

ON FEBRUARY 9TH, DRIVING HOME ON A ROUGH HIGHWAY, MY SERVICE ESC, ABS, TRACTION CONTROL AND CHECK ENGINE LIGHT (FLASHING) CAME ON. I IMMEDIATELY PULLED OVER, FREAKING OUT. SHUT MY CAR OFF CAUSE I HAD NO CLUE WHAT TO DO. SAT FOR A FEW MINUTES, COLLECTING MYSELF AND TURNED IT BACK ON. ALL LIGHTS WERE GONE, SO I DECIDED TO CONTINUE THE DRIVE HOME. TOOK MY CAR INTO THE DEALER THE FOLLOWING DAY, FOUND CODE P0300 STORED IN HISTORY. THEY DID AN UPDATE, AND HOPED THAT WOULD SOLVE MY ISSUE. ALAS, IT DID NOT. THIS SAME ISSUE HAS HAPPENED AT LEAST 6 TIMES NOW. THE 5TH TIME, AGAIN, ON A SMOOTH HIGHWAY, I COMPLETELY BROKE DOWN AND HAD TO BE TOWED! IT HAS NOW BEEN SITTING AT THE DEALER FOR TWO WEEKS (SINCE JULY 31ST) WHILE THEY TRY AND DIAGNOSE THE ISSUE.

Aug 14, 2020

WHILE DRIVING, THE ENTIRE GPS NAVIGATION SHUTS OFF AND GIVES AN SD CARD ERROR MESSAGE. NOTHING ON THE INFOTAINMENT SCREEN IS ON OR FUNCTIONING, INCLUDING SENSORS.

Apr 24, 2019

STOP AND GO TRAFFIC ON I-75. THE VEHICLE JUMPED FORWARD. DRIVER TRYING TO PUSH THE BRAKE PEDAL BUT IT WAS NOT WORKING, AUTO SENSORING HAD TAKEN OVER THE VEHICLE AND CAUSED THE VEHICLE TO REARENDED THE VEHICLE AHEAD OF IT PUSHING THAT VEHICLE INTO THE VEHICLE AHEAD OF THAT ONE.

Apr 04, 2019

Crash: 1

VEHICLE SPEED CONTROL

3 complaints

ON JULY 4TH, 2019 AT 11:15 AM, THIS VEHICLE (LANE ASSIST AND ADAPTIVE CRUISE CONTROL OPERATING) APPLIED ITS BRAKES SOMEWHAT AGGRESSIVELY WITHOUT REASON. THIS WAS ON A HIGHWAY. I HAVE BLACKVUE CAMERAS THAT RECORDED THE EVENT. 12:15:09 74 MPH 12:15:10 73 MPH 12:15:11 67 MPH 12:15:12 60 MPH 12:15:13 56 MPH I TAPPED THE BRAKES TO SHUT DOWN THE ADAPTIVE CRUISE CONTROL. 12:15:14 56 MPH 12:15:15 55 MPH

Jul 05, 2019

THE SHIFTER IS DANGEROUS. IT ALLOWS YOU TO INADVERTENTLY SHIFT INTO NEUTRAL WHILE DRIVING. IN A CAR WITH A NORMAL SHIFTER, THE SHIFTER NEEDS TO BE PUSHED WITH SIGNIFICANT FORCE TO MOVE IT INTO NEUTRAL AND THE RESULTING THUNK WILL LET YOU KNOW IT HAPPENED. IN THIS CAR, SINCE IT IS AN ELECTRONIC BUTTON THAT CAN BE EASILY PRESSED, ESPECIALLY BECAUSE IT IS IN A LOCATION WHERE IT MIGHT GET HIT BY AN OBJECT LIKE A PURSE. THE DRIVER MAY WIND UP WITHOUT POWER AND THEN NOT HAVE AN EASY WAY TO REINGAGE DRIVE. ALSO, THERE IS NO PHYSICAL DIFFERENTIATION BETWEEN DRIVE AND REVERSE, WHICH CAN CAUSE CONFUSION IN LOW SPEED DRIVING INTERACTIONS IF A DRIVER DOES NOT LOOK AT THE BUTTONS. VEHICLES SHOULD HAVE A SOFTWARE UPDATE TO INDICATE WHEN THE VEHICLE GOES INTO NEUTRAL ABOVE A CERTAIN SPEED AS WELL AS HAVING THE PHYSICAL BUTTONS REPLACED WITH SOMETHING THAT OFFERS A TACTILE DIFFERENCE BETWEEN REVERSE AND DRIVE.

Nov 05, 2018

VEHICLE CAN BE INADVERTENTLY BY EITHER A PASSENGER OR AN OBJECT PUT INTO NEUTRAL. NO ALERT OR CHIME IS MADE TO ALERT THE DRIVER THAT THE CAR IS IN NEUTRAL, ONLY THE GEAR SELECTOR ON THE DASH OR THE LIGHT ON THE BUTTON INDICATES THAT IT IS IN NEUTRAL. IF SOMETHING IS COVERING THE SHIFTER, SUCH AS A BAG OR OTHER ITEM, IT IS POSSIBLE THAT AN ACCCIDENT MIGHT OCCUR BECUASE THE BAG OR ITEM MAY PRESS THE BUTTON, SHIFT THE VEHICLE INTO NEUTRAL CAUSE THE DRIVER TO BE CONFUSED AND NOT HAVE POWER TO MANEUVER THE VEHICLE IN AN EMERGENCY SITUATION. A CHIME SHOULD ALERT THE DRIVER THAT THE VEHICLE HAS BEEN PUT IN NEUTRAL SO IT DRAWS ATTENTION TO THAT FACT. IN ANOTHER SCENARIO A SMALL CHILD THAT IS OLD ENOUGH TO SIT IN THE PASSENGER SEAT BUT NOT OLD ENOUGH TO UNDERSTAND THE CONTROLS MIGHT PRESS THE BUTTON, CAUSING THE DRIVER TO HAVE AN ACCIDENT BECAUSE THEY ARE NOT ABLE TO MANEUVER OUT OF THE WAY OF AN IMPENDING COLLISION. I HAVE VERIFIED THIS POSSIBILITY BY PRESSING THE NEUTRAL BUTTON AT VARIOUS SPEEDS AND IT IS VERY POSSIBLE FOR IT TO HAPPEN UNINTENTIONALLY. OTHER VEHICLES WITH SIMILAR SYSTEMS HAVE THE BUTTONS AND OR SHIFTER IN A PLACE WHERE INADVERTENT ENGAGEMENT OF THE BUTTON IS UNLIKELY. OTHER SCENARIOS - PEOPLE PLACING PHONES, BAGS ETC DURING THE COURSE OF DRIVING, AS ON A HIGHWAY MAY INTERFERE WITH SHIFTING IN AN EMERGENCY SITUATION OR MAY CAUSE ONE BY PUTTING THE VEHICLE IN NEUTRAL. AS IN AN HOUR IN ON A LONG DRIVE, SOMEONE BLOCKS THE SHIFTER BECAUSE THEY AREN'T IN NEED OF IT AT THE MOMENT AS THEY MIGHT BE WHILE PARKING OR MANEUVERING IN CITY TRAFFIC.

Aug 15, 2018

UNKNOWN OR OTHER,SERVICE BRAKES,ENGINE

2 complaints

Two weeks ago I was driving on the highway. My car felt fine. No warning light the dashboard. Suddenly I receive a notification on my dash stating “engine speed reduced” and my check engine light went on. My car at this point still feels fine, not shaking, no smoke, etc. I’m on the highway and not in a safe position to pull over. 2 minutes later I receive another notification on my dash stating “service breaks”. I immediately tap my brakes to check and they are stiff. I let off the gas as I was approaching the exit and begin pumping my brakes. They continue to be stiff. Luckily there was no one I front of me as this exit led to a rotary. I was able to coast around the rotary and into a parking lot where I attempted to push the E- break which did not work. My steering tightened and then my car died. I have the car towed to GMC where I bought the vehicle. Am told I will be charged a diagnostic fee and they will let me know what they find before repairs are made. I receive a call back the following day stating “the vacuum pump exploded causing you to loose brakes”. I was told “the vacuum pump and repairs would be about $1,200. BUT they could not guarantee that once the vacuum pump was removed, there wouldn’t be more debris and destruction to the cam shaft and engine”. We asked they continue with the diagnostics and check the engine for debris. We receive a call back stating “the vacuum pump exploded and there are shards of medal debris in your engine”. Recommendations are that I need a new engine as "the vacuum pump explosion caused catastrophic damage to the engine". My safety and the safety of other innocent drivers on the highway were put in extreme danger! I lost all break control, power steering, and emergency break control. I had minutes from the time the first warning alerted to the time I lost complete control of the car. This is a known issue with GM Motors specifically made between 2016-2019.

Sep 07, 2025

While driving on 95, I lost all engine and power breaks with no warning. A message came up on my dash stating that I had lost engine power. Fortunately an exit was up ahead so I was able to get there and coast down the ramp. I attempted to make a right turn to get out of the way but ran out of momentum. Dealership stated my vacuum break pump failed and went into the cam shaft. They had to replace those and the solenoid actuator and value. They also conducted an oil change. I received it back yesterday, started the car today and the check engine light was on. They found more debris and replaced another point and said if the light comes on again it's the timing chains in the engine. I went out leave and the check engine light was on. They are now keeping it to repair the timing chains. I am fighting with GM to cover the expenses since I see this is an issue in previous models/years of GMC and Chevy vehicles.

Mar 29, 2024

ELECTRICAL SYSTEM,UNKNOWN OR OTHER

2 complaints

Back up camera just started showing a blue screen with message that stated service back up camera. No accident, has not been to dealership. Just started 8/15/2025. No warning given.

Aug 15, 2025

Blue screen with the message "Service Rear Vision System"

Dec 16, 2024

POWER TRAIN,SERVICE BRAKES

2 complaints

Accelerating from a stopped position into a busy intersection heard a loud clunk come from engine bay resulting in immediate "Reduced engine power" warning and stall condition. Was able to push vehicle onto the side of the road. Engine would not restart and a tow truck was called. Vehicle towed to local dealership who discovered that Vacuum Pump had failed resulting in sheering off of the exhaust camshaft. Dealers recommended fix was to replace vacuum pump and camshaft at around $4,000 but could not guarantee no debris had gotten into valve body resulting in engine failure so stated they could replace with used engine for 8500. Second vacuum pump to blow on this vehicle, first at 35k miles and replaced under warranty, this incident at just under 80k miles. Could not afford repairs and vehicle has sat for nearly 2.5 years. Contacted GM many times over that time period to get no assistance, only the offer of a small discount on a new vehicle. This incident could have proven fatal if happening at highway speeds since it stalls engine out and makes braking nearly impossible. Both GM and the NHSTA have really flunked on this one, should have been recalled during first complaints in 2020. I will continue to file complaints here on NHSTA and with GM until the cows come home.

Jul 08, 2025

I received a "service brake assist" message which came on then off. Took the car to a local mechanic who looked it over and said to see dealer as they saw nothing obvious. internet search revealed that many people with terrain said this warning came on when battery was low. Made a service appt for NJ dealer for 12/6/21. on 12/3/21, began a 1200 mile drive from Florida to NJ, after 2 hours, check engine light came on. Took the exit ramp from I 75 and at end of ramp, there was a total braking failure. I had to press very hard to eventually stop. Shut off car, attempted to restart but it would not. Towed to a mechanic who found fluid leakage and a repair bulletin on GM site involving vacuum seal camshaft. #pip5598A diagnostic tip. Internet search reveals many anecdotal instances of same problem. On Monday, 12/6/21, I received an email from GMAC saying that the on board diagnostics had shown a "low battery" concern. The catastrophic loss of braking seems to be connected to a low battery situation. This needs to be looked into by NHTSA.

Dec 07, 2021

POWER TRAIN,VEHICLE SPEED CONTROL

2 complaints

The contact owns a 2019 GMC Terrain. The contact stated while driving approximately 40 MPH, the accelerator was depressed to overtake a vehicle; however, the vehicle hesitated, and RPM revved to 4,000 RPM. The vehicle then shifted into gear with a jerk, causing the vehicle to shake abnormally. The contact stated there was no warning light illuminated. The contact stated that the failure also occurred while accelerating from a stop. The contact had taken the vehicle to an independent mechanic who diagnosed the vehicle but was unable to retrieve a fault code. The vehicle had not been repaired. The contact stated that the failure was intermittent but persistent. The manufacturer had been informed of the failure. The failure mileage was approximately 60,000.

Sep 12, 2023

TL* THE CONTACT OWNS A 2019 GMC TERRAIN. WHILE DRIVING APPROXIMATELY 40-70 MPH, THE VEHICLE LOST POWER AND INDEPENDENTLY DECELERATED. THE VEHICLE WAS TAKEN TO SHAMALEY BUICK GMC (LOCATED AT 955 CROCKETT ST, EL PASO, TX 79922, (915) 231-4000) WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPAIRED AND THE POWER TRAIN CONTROL MODULE NEEDED TO BE UPDATED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED THE FAILURE ON FOUR SEPARATE OCCASIONS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED CASE NUMBER: 95389790118. THE APPROXIMATE FAILURE MILEAGE WAS 17,000. THE VIN WAS INVALID.

Aug 19, 2019

AIR BAGS

2 complaints

The contact owned a 2019 GMC Terrain. The contact stated that while driving at an undisclosed speed, another vehicle crashed into the passenger side of the contact's vehicle. The air bags deployed; however, metal fragments from the air bag hit the contact's face, causing severe injuries. The contact received medical attention. The vehicle was towed to a tow yard. A police report was filed. The vehicle was deemed totaled by the insurance company. The manufacturer was not made aware of the failure. The failure mileage was approximately 20,000.

Jul 10, 2023

Crash: 1

Injuries: 1

I WAS IN AN ACCIDENT AND WAS HIT IN THE DRIVER ON THE DRIVER SIDE OF THE VEHICLE ON THE STREET. THE AIRBAGS DIDN'T DEPLOY DURING THE ACCIDENT.

Jul 12, 2019

Crash: 1

Injuries: 1

ELECTRICAL SYSTEM,EXTERIOR LIGHTING,ENGINE

2 complaints

The car cuts off during driving and when u crack it back up the dash light do not work. But then the dealership said its a known issues but the car just needs to be reset...... but cutting off while driving can be dangerous. It's something a car should not do

Feb 06, 2023

While driving the car cut off on us. Started the car and the dash lights were on. Also Navigation stopped working. Took the car to bellamy Strickland and they said no issues was found. Got the car back 12/02_2021 Car seems to be ok at the moment. Melissa at bellamy stated it could have been a computer glitch. Car only has 20k miles on it.

Dec 03, 2021

ELECTRICAL SYSTEM,SERVICE BRAKES

2 complaints

I was driving through a four way intersection with my children and the breaks locked up and I couldn’t get to a stop. This was the middle of September: There are MULTIPLE complaints on this happening with my model and someone is going to die if it’s not recalled. This is a serious safety concern. There was NO warning, or light to prepare me for the problem. Please do something to help us.

Oct 07, 2022

Driving down load. Brake pedal got stiff as a rock. Brakes started to lock up. Almost caused a collision, as the car would not stop

May 21, 2021

POWER TRAIN,ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE

2 complaints

The car failed to shift into gear. Message displayed, "transmission unable to shift" ,"2 gears selected " or "service transmission". Issued started in June 2022 while in drive thru line, when shifting from park to move the car would not shift. Had to turn car off for about 10 minutes and car was able to shift and drive normal. Check engine light came on about a week later and had checked for code p07b5. A couple of days later, light went back off. About 3 days later getting ready to leave home and car would not shift into gear again but turn car off and back on a couple of times and car shifted and drove normal. On July 13 2022 was driving in traffic and message displayed, unable to shift and service transmission. When I changed lanes and released the gas petal, the car went into park, stopped, and set the parking brakes, but did not turn off, jerking me forward and throwing things around in the car. Cars behind me had to slam on brakes to keep from hitting me because there was no initial brake light. I put on the flashers and turned the car off. Parking brake was stuck so I pressed it about 5 times before it finally released. I restarted the car 3 times and it finally shifted and drove as normal. I called gm to inquiry about a recall and was told there were none. I called for a diagnostic test and schedule is in about 2 weeks. The car has not been inspected by anyone listed above??

Jul 15, 2022

The autoshutoff of the vehicle should be optional this vehicle goes on and off so many times and after it starts is acting up on braking and transmission deeler says no dtc all good but still doin it

Feb 20, 2022

ELECTRICAL SYSTEM,ELECTRONIC STABILITY CONTROL (ESC)

2 complaints

The contact's wife owns a 2019 GMC Terrain. The contact stated that upon making a left turn, the steering wheel would forcefully jerk to right, thrusting the vehicle into the opposite direction. The contact stated that the service ESC and service brake assist warning lights were illuminated. The warning lights would disappear soon after the failure as well as upon restart. The contact had taken the vehicle to the dealer on multiple occasions where he was repeatedly informed that unless the service light was illuminated upon arrival to the dealer, they would be unable to service the vehicle. The vehicle remained in the possession of the dealer and was not repaired. The manufacturer had yet to be notified of the failure. The failure mileage was unknown.

Jul 13, 2022

9/30/20 DRIVING HOME AND WAS ACCELERATING TO PASS ANOTHER VEHICLE, THE TCS AND STABILITRAK LIGHTS CAME ON AND CHECK ENGINE LIGHT BEGAN TO FLASH. A BRIEF MESSAGE POPPED UP TO SERVICE THE TCS SYSTEM AND WENT AWAY. CHECK ENGINE LIGHT STOPPED FLASHING BUT TCS & STABILITRAK/TRACTION LIGHTS REMAINED ON. I STOPPED THE VEHICLE AS SOON AS I COULD, TURNED IT OFF, WAITING A FEW MINUTES AND RESTARTED - ALL LIGHTS HAD TURNED OFF. PROBLEM HAS NOT REPLICATED, BUT AM SCHEDULED FOR SERVICE (OIL CHANGE) AT DEALER TASCA BUICK GMC SAT OCT 3RD, WILL DISCUSS DURING SERVICE APPOINTMENT. (I COMMUTE DAILY ROUND TRIP 120 MILES) THIS IS EXTREMELY WORRISOME)

Sep 30, 2020

TIRES

2 complaints

BOTH FRONT TIRES SHOWING HEAVY CHIPPING OFF OF TIRE TREAD

Dec 30, 2021

The contact owns a 2019 GMC Terrain equipped with Hankook Tires, Tire Line: Ventus S1 Noble 2 Tires, Tire Size: 235/50/R19, DOT Number: (N/A). The contact stated that while her daughter was driving approximately 45 - 50 MPH, the low-pressure tire warning light was illuminated. The contact's daughter pulled over and noticed that there was tread separation on the front passenger's side tire. The contact's daughter replaced the affected tire with the spare tire. The vehicle was later towed to the dealer. The dealer was awaiting approval from the manufacturer to replace the tire. The tire manufacturer was not made aware of the failure. The failure mileage was not available. The VIN was not available.

Dec 13, 2021

POWER TRAIN,ENGINE

2 complaints

My 2019 GMC Terrain has 21K miles and noticed a oil or transmission leak this morning. I see recalls for other vehicles but none for mine. Linking from a bolt just as the other recall is for.

Dec 01, 2021

I HAVE A 2019 GMC TERRIAN WITH 2500 MILES. I WAS DRIVING IT AND THE CAR FLASHED LOW FUEL, CHECK TRANSMISSION AND CHECK ENGINE WARNING AND SHUT DOWN WHILE I WAS AS A HIGHWAY SPEED. I WAS FORTUNATELY OK, HOWEVER IT STRANDED ME AT A SPOT WITH MERGING TRAFFIC, NO SHOULDER AND NO POWER TO GET THE VEHICLE OUT OF THERE. THE VEHICLE WAS ABLE TO START UP SHORTLY, THEN I HAD TO DEAL WITH GETTING GOING AGAIN IN THIS PRECARIOUS SPOT.

Apr 22, 2019

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE

1 complaint

Vehicle has had check engine light and engine reduced power flicking on and off for months, randomly reducing power on highway or nearly causing accidents. Brought car to GMC dealer, they said it was underboost code and needed new turbo. Paid over 7,000$ for repair. Next morning, same issue still was happening. I believe my vehicle has EMISSIONS recall issue “N192271200 Charge Air Cooler Disconnect at Throttle Body” but GM has not properly attached my vin number for this recall repair. I have poured thousands into repairs out of pocket and the same issue still persists. I believe strongly the recall emission issue is the problem and should be on my vin. Vehicle has been to dealer 3 times in the past 2 weeks, issue has not been fixed. Improperly diagnosed, random repairs made not fixing actual issue.

Nov 11, 2025

UNKNOWN OR OTHER,SERVICE BRAKES

1 complaint

We have been having varying issues with this GMC, and have found numerous others with the same issue. Vacuum pump went out while driving. Thankfully I was not going very fast and it stopped prior to hitting someone. This is a known issue, yet no recall from GMC. Vacuum pump is said to have been failing causing other engine and transmission issues that can never be "re-created" for the vehicle to be fixed.

Oct 06, 2025

SUSPENSION

1 complaint

Recently experience rear differential binding with vehicle resulting in an accident.

Sep 24, 2025

Crash: 1

POWER TRAIN,VEHICLE SPEED CONTROL,FUEL/PROPULSION SYSTEM

1 complaint

Vehicle struggles to shift from low gears; seems to completely miss 3rd gear. Codes from maintenance indicate TCC slip

Sep 22, 2025

SERVICE BRAKES,ENGINE,FUEL/PROPULSION SYSTEM

1 complaint

While driving the vehicle the car went into limp mode and the back brakes stopped working. The car had to be drifted into a parking lot. The vacuum pump malfunctioned and has damaged the engine. If it was me in the driver seat instead of my partner, the incident would’ve 100% been an accident. The car was really unable to be controlled and we just happened to have that space that was empty to turn into. The car gave code when this happened. When getting a tow the car also wouldn’t take itself out of park or start to go into neutral to move the car to get it towed. Nothing is working with each other anymore and we were on a busy road of people when our brakes just went out.

Aug 31, 2025

STEERING,VEHICLE SPEED CONTROL,SERVICE BRAKES

1 complaint

Friday July 25, 2025 I was driving my 2019 GMC Terrain SLE and when exiting the interstate the brake pedal got hard and I could not stop. After almost rear ending another vehicle, I got the vehicle into the ditch and safely off the road. After several attempts to correct the problem, I was unsuccessful. The vehicle was towed home and seen by a mechanic. The vacuum pump went out while I was driving.

Jul 28, 2025

ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE

1 complaint

Service parking brake comes on, steering reduced. Problem reoccurring often, but intermittently. Actuators malfunctioning causing many sensors to fail off and on. Huge safety concern for myself, my riders, and anyone else on the road. When this happens my car has to “think” to move unless you clear the pop up message. Check engine light comes off and on at its leisure. When steering reduced comes on the car will not move until ready. This is clearly affecting electrical things as when I shut power off to other supplies it sometimes becomes more frequent as well as less frequent. The car does not understand what to do as its computers are confused at what the problem is, as the problem does not consistently happen. I have print outs of one time I caught it with failing actuators. I refuse to go to the dealership as I’m told “oh the problem isn’t happening now.” Which negates safety of all people on the roadways. You’re more than welcome to inspect. Though I will be present as I refuse to be told there’s no problem. As previously stated this happens when it wants to happen, but again I’ve caught the issue and can supply information.

Feb 04, 2025

ELECTRICAL SYSTEM,EXTERIOR LIGHTING

1 complaint

Headlights flicker when auto stop releases and clicks back on to move the vehicle. This happens when it wants too but usually at the same time service parking brake will pop up, followed by steering is reduced, drive with care.. Lets see what else. Carplay no longer works. No sound. sd card error pops up. Car will not play music through a cord but will via bluetooth, but charges a phone. OnStar light flickering between green and red until I turned off power to the liftgate. (manually clicking over knob to disable) Headlights flickering can cause accidents. Sure hope there's no epileptics out. Yes, orielly. I have documentation, photos, videos, take your pick I'm here to help. Not evaluated at dealer or mechanic, who can afford labor rates? This has been happening for months and I will continue to report till something is done or lives are cared about.

Feb 04, 2025

STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES

1 complaint

My ESC randomly comes on. Service parking brake message comes on intermittently. Messages pop a up saying steering wheel assist limited, drive with care. Again, all of these are intermittent but when they happen my steering wheel locks up. Even mid turn. Being intermittent it doesn’t always happen and weather seems to affect when it happens, or that’s a coincidence.

Dec 09, 2024

STRUCTURE

1 complaint

While I was driving on a highway, my sunroof suddenly imploded, causing shattered glass to fall all over myself and my car. The outside temperature was 50° and my car’s internal temperature was set to 68°. I reported this to the GM dealership and they told me to just report it to insurance. I am making a claim with insurance now. There were no warning or signs of this happening, just a sudden extremely loud noise and glass falling. No inspections have been done.

Nov 25, 2024

SERVICE BRAKES, HYDRAULIC,ENGINE

1 complaint

The contact called on behalf of her husband who owns a 2019 GMC Terrain. The contact stated that while her husband was driving approximately 50 MPH, the brakes seized, and the contact veered off into a lot to park the vehicle. The vehicle was towed to an independent mechanic where the vehicle was diagnosed. The contact was informed that the brake vacuum pump and the timing chain needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 72,000.

Oct 09, 2024

POWER TRAIN,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

1 complaint

Break booster pressure sensor and engine underbooster causes the car to slam on breaks or not break at all.

Aug 19, 2024

SUSPENSION,POWER TRAIN

1 complaint

My transmission keeps sticking when I shift into drive or reverse. Just a couple of days ago, it happened the worst it has ever done before. I shifted into reverse and my vehicle was completely stopped when I shifted. I began to let off of the brakes and gently push the accelerator to start moving back, my vehicle then punched itself into reverse. I felt after that incident, something had to have been damaged. I’m almost afraid to drive my vehicle after that. When my vehicle punched itself into reverse, I was literally jolted towards the steering wheel and thankfully my seatbelt caught me. Incidents with the the shifting into drive or reverse have happened before, but never nearly as intense. About a year ago, I brought my vehicle in to my local GMC Dealership for a concern with my transmission shifting weirdly and holding itself in gear at an unnecessarily high RPM speed. The technician stated to me, “with these 9-speeds, they tend to get confused at various speeds”. I asked him to elaborate and he could not. These issues have now gotten worse. With my suspension, every turn I take, I get a kreaking sound from my front driver side wheel well. It sounds as if my tire if going to break off. I’ve done visual inspections and nothing out of the ordinary is noticeable to the eye. My vehicle is a 2019 with less than 40,000 miles on it. I should not be having all of these issues. I’m genuinely concerned for my safety.

Aug 02, 2024

SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

1 complaint

Brakes got hard all of a sudden locked up, almost hit another car, front collision warning keeps going off and automatically hitting brakes with no one in front of me. I’ve read it could vacuum brake pump failure. Please recall this as many people have kids and could hurt them.

Feb 20, 2024

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,SERVICE BRAKES

1 complaint

It began with showing "Service Brake Assist" for about 2 weeks + then on Dec 18th 2023 around 10:30 as my fiancé was stopped at a stoplight and all of sudden when the light turned green she attempted to continue forward as traffic started to move only to stall stalled out before any movement could be achieve the battery was reading severely depleted and the vehicle would not function at all she was stuck in Drive and could not put the vehicle in neutral or even park to even try to restart the vehicle, she could not even turn the steering wheel, roll down the windows, open the door, or anything. the only thing she was able to accomplish was opening the hood so an officer that had arrived at this time could give her a jump, The officer also proceeded to leave the negative cable on the battery terminal and disconnected the Positive cable from the battery terminal which would have indicated a bad starter or depleted battery when the positive cable had been removed, which was not the case. she continued to where her appointment was and that is where i met her and took over vehicle to transport it home, driving with hazards on. I arrived at the house with no incident. then at 4:45pm on the evening of 12/18/2023 while at the stoplight I had a similar issue occurred as i was going from a stationary position to a forward slowly accelerated speed gaining momentum where the vehicle wanted to stall out while i was stopped at a stoplight attempting to proceed forward. and then at around 10:20 pm while stopped at a stop sign a similar issue occurred as i was going from a stationary position to a forward slowly accelerated speed gaining momentum attempting to proceed forward. On Dec 19th 2023 around 10:00 am I test started the car by remote and it started up and then i turned it off, now it is showing that the battery is completely depleted at 1:26 pm

Dec 19, 2023

STEERING,SUSPENSION,ELECTRICAL SYSTEM

1 complaint

When turning right or left from a stop, the steering wheel jerks sharply in the opposite direction as soon as the car starts to accelerate. Diagnostic tests and inspection determined that the steering gear is loosing voltage causing the jerk in the steering wheel. The gear has the latest calibration and needs to be replaced. Cost estimate to replace is $2035.63

Oct 27, 2023

POWER TRAIN,ELECTRICAL SYSTEM,SERVICE BRAKES

1 complaint

There are 3 recalls and one open on this car I was sold by a dealership, none of them ever fixed. I drive to work in the highway the car never had any warning light on but the RPMS would occasionally go up for no reason. I told the dealership the second day that it had issues , they took it and say they fixed the back brakes but did nothing about the engine or transmission whatsoever ever. This was the beginning of may and it was in the shop two weeks. I called my lender to even get out of the loan and a saleswoman even tried assisting me into talking her manager out of the loan because of all the issues. Fast foreword to august I had just gotten a new job and was driving in the night after hearing that ticking or slight knocking noise and I went to my job and as i tried to park the brakes went completely stiff on me! I could not get the car to slow down I had to weave through other cars and people in till it finally coasted to a stop. So I put it in park and immediately after the check engine light came on. I tried to start it and it would start , putter and turn off over and over. I had to end up calling OnStar to have a diagnosis which she said something like solenoid and something being clogged. So it was towed to my residence and before i could get it towed to s shop they lender came and repossessed it because I had missed payments due to losing my job unexpectedly, completely unexpectedly. I told the lender of the problem and the unfortunate troubles I was having to pay for the car but I had just landed a job and could start payment but she didn’t care. She said she is going to tow it . I had my friends dad who is a licensed mechanic look at it before it was towed and he said the car was trash , basically a lemon that there was oil clogged and instead of passing through like it’s supposed to do it being pushed the opposite way and ending up in other reservoirs it shouldn’t be in. I obviously didn’t do that type of damage oil and trans problems I was scammed

Aug 28, 2023

SERVICE BRAKES,EXTERIOR LIGHTING

1 complaint

When parked in home driveway brake lights came on with no one in car or driven during the day. Only way to turn off brake is to remote start & then cut off engine with Fob. Dealer diagnostic unable to find issue & condition didn't occur when at their location.

Jul 08, 2023

VISIBILITY

1 complaint

The contact owns a 2019 GMC Terrain. The contact stated that while driving at approximately 75 MPH, the panoramic glass sunroof shattered, causing shards of glass to enter the cabin of the vehicle. The contact stated that the panoramic sunroof was in the closed position when the failure occurred. During the failure, the front passenger sustained lacerations to the back, leg, and shoulder. The eleven-month-old child seated in the rear passenger’s side seat sustained lacerations to both legs. The rear middle seat occupant sustained a laceration to the rear head area, while the rear driver’s side occupant sustained lacerations to both arms. No injuries required medical treatment. The cause of the failure was not yet determined. The local dealer and manufacturer were not notified of the failure. The failure mileage was 58,000.

May 22, 2023

Injuries: 4

EXTERIOR LIGHTING

1 complaint

I was driving at nighttime and my head lights cut off.. they were in auto light mode. I read that gmc knows about some sort of issue with this but only covers repairs up to 150k miles. My car is 156k miles. There was no warning lights and no indication anything was wrong. Luckily I was the only care on my side of the highway and was able to slam on the brakes and come to a complete stop. I turned the car off and then turned the head lights to manual and they can back on. A few hours later when I got home, I let the car cool off and turned the headlight back to auto and turned the car on and the worked.

Apr 26, 2023

ENGINE,FORWARD COLLISION AVOIDANCE

1 complaint

I’m crying out to you because I bought a 2019 GMC Terrain in April of this year with about 14,000 miles. The suv ran great for about 2 months and since then I’ve been dealing with nothing but a nightmare. We’re dealing with a situation where the suv goes into park while driving. We’ve brought the suv multiple times to GMC dealership and even reached out to GMC, and had no luck resolving the issue. Last night, while driving to a family event, the suv went into park while I was driving. This is the 4th time since we got the suv. I’m scared for my safely in this suv, if you could please assist

Dec 03, 2022

SEAT BELTS

1 complaint

The drivers side Seat belt buckle breaks somehow and we are unable to buckle the seatbelt in the car. After the first time, I bought another brand new buckle, replaced it. After one week of use, it also locked up. I am not sure what is going on and why such a thing keeps happening, but it is not safe and needs to be fixed ASAP. Not everyone has $80 to spend once a week on a new belt buckle which should last a lifetime. This is beyond dangerous, since seat belts are mandatory and my wife being unable to use it can be a matter of life or death. This is her only means of transportation and we can't just park it and use another. I can't possibly be the only one. Thank you for taking the time to look into this matter. Please let me know if there is any further information regarding this matter.

Sep 06, 2021

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ELECTRONIC STABILITY CONTROL (ESC)

1 complaint

TWO INCIDENT WARNINGS ON MY DASHBOARD SAYING OF MY BACK HATCH WAS OPEN WHEN IT WAS NOT. HAD IT SERVICED BECAUSE THE DASH WARNING WOULD NOT SHUT OFF. SERVICE SAID IT WAS FIXED THEN HAPPENED AGAIN. TWICE THIS HAPPENED INTERMITTENTLY. ANOTHER INCIDENT WHEN ON NAVIGATION SCREEN, WHEN THE NAVIGATOR GAVE DIRECTIONS IT CHANGED TO PHONE SCREEN AND WENT BACK TO NAVIGATION SCREEN WHEN SHE STOPPED TALKING, LIKE SHE WAS CALLING ME TO VERBALLY GIVE ME DIRECTIONS! THE MOST WORRISOME WAS AS I WAS GOING 50 MPH ON CITY STREET, MY GAS PEDDLE STOPPED ENGAGING WITH THE ENGINE AND I WAS LOOSING SPEED, AS I PRESSED ON THE GAS PEDDLE HARDER THE CAR WAS DECREASING IN SPEED AS I WATCHED THE SPEEDOMETER. DURING THAT INCIDENT ALL WAS WORKING INCLUDING BRAKES, RADIO AND STEERING. I PROCEEDED TO DRIFT INTO A DRIVEWAY TO STOP THE CAR FOR HELP, GOOD THING I WAS NOT ON THE FREEWAY COULD HAVE GOTTEN KILLED. THE CAR IS GETTING SERVICED NOW, I DO NOT WANT IT BACK, WILL TRADE IN FOR DIFFERENT MAKE/MODEL IS THIS CONSIDERED A LEMON AND WHICH LAWS/ACTION DO I TAKE? I'VE ONLY HAD THE CAR ONLY 7 MONTHS WHEN THIS STARTED TO HAPPEN.

Aug 13, 2020

VEHICLE SPEED CONTROL,ENGINE

1 complaint

ON AUGUST 23, 2019, MY VEHICLE INCURRED AN ENGINE AND TRANSMISSION FAILURE REPORTED BY GMC ONSTAR APPLICATION. THE SYMPTOMS OF FAILURE ARE REPEATED ACCELERATION SPEED CONTROL CAUSING SPEED LIMIT VIOLATIONS, INTERFERENCE WITH OTHER MOVING TRAFFIC, SPOUSAL TRAUMA, AND ILLUMINATION OF MULTIPLE DISPLAY WINDOW LIGHTS IN THE DASHBOARD BEHIND STEERING WHEEL. ON OCTOBER 14, 2019, THERE WAS A REOCCURRENCE OF THE SAME ISSUE. IN FACT, THIS REPORT IS TO GET AHEAD OF THE PROBLEM BEFORE TAKING VEHICLE FOR SERVICE THIS MORNING, OCTOBER 15, 2019, AT SEWELL BUICK GMC. I HAVE SERVICE DOCUMENTATION AND ONSTAR EMAIL MESSAGES OF FAILURE FOR EVIDENCE OF THIS REPORT.

Oct 15, 2019

POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE

1 complaint

I PURCHASED A 2019 GMC TERRAIN VIN: [XXX] ON JAN 17, 2019 AT RIZZA BUICK GMC 8415 W. 159TH STREET, TINLEY PARK IL, 60487, ON JANUARY 17, 2019. THIS WAS MY FIRST BRAND NEW CAR AND I WAS EXCITED. I TRADED IN A 2014 GMC TERRAIN IN THE PROCESS, KNOWING I WOULD BE UPSIDE DOWN ON THE LOAN. I HAD THE FIRST SERVICE DONE ON APRIL 23, 2019 AT SAID DEALERSHIP. AT THAT VISIT I EXPLAINED THAT I WAS HEARING A NOISE ON THE PASSENGER SIDE VENT EVEN WHEN THE HVAC WAS NOT RUNNING. I WAS TOLD NOTHING WAS DETECTED AND MY VEHICLE WAS FINE ON MAY 24, 2019, I DROVE MY VEHICLE TO MEMPHIS TENNESSEE WITH MY FAMILY FOR MEMORIAL DAY. ON MAY 25, 2019 THE CHECK ENGINE LIGHT CAME ON, I WAS LOSING POWER TO THE ENGINE. THAT SAME NIGHT CUSTOMER SERVICE TOWED MY VEHICLE TO SUNRISE CHEVROLET BUICK GMC, 1800 COVINGTON PIKE MEMPHIS, TENNESSEE 38128, A NEARBY GMC DEALERSHIP AND SET UP A RENTAL CAR IN THE AREA FOR ME TO DRIVE. BECAUSE IT WAS THE HOLIDAY, ENTERPRISE WAS CLOSED, AND I HAD NO VEHICLE TO DRIVE FOR TWO DAYS. THIS WAS AN INCONVENIENCE TO ME AND MY FAMILY, I HAD TO ALTER MY TRIP PLANS THAT WERE MADE BACK IN FEBRUARY 2019. ON MAY 27, 2019 I WAS TOLD BY [XXX] THE TECHNICIAN AT SUNRISE CHEVROLET THAT AIR BOX TUBE WAS LOOSE AND NOT PROPERLY INSTALLED AND COULD HAVE BEEN DONE DURING MY SERVICE I HAD DONE APRIL 23RD. I WAS ASSURED EVERYTHING WAS OKAY AND I WAS GOOD TO GO. ON MAY 31, WHILE TRAVELING BACK HOME THE CHECK ENGINE LIGHT CAME ON AGAIN. SAME MESSAGE ON THE DASH AND IT WAS RAINING AT 3AM. I WAS CLOSE TO HOME AND WAS ABLE TO MAKE IT TO THE DEALERSHIP THAT I PURCHASED IT FROM. MY VEHICLE HAS BEEN IN SERVICE SINCE MAY 31, 2019 AND I AM JUST FINDING OUT THAT I HAVE A PART THAT IS ON NATIONAL BACK ORDER. I AM NOT SATISFIED WITH MY EXPERIENCE AN I AM REACHING OUT TO YOU TO RESOLVE THIS MATTER. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

Jun 12, 2019

STEERING

1 complaint

THERE ARE NUMEROUS DEFECTS RELATED TO THE STEERING, THE LOW SPEED FORWARD AUTOMATIC BRAKING DOESNT WORK AND THE FRONT PEDESTRIAN BRAKING DOESNT WORK. THE LANE KEEP ASSIST WORKS MOST OF THE TIME BUT THE LANE DEPARTURE WARNING NEVER WORKS. I BROUGHT IT TO THE DEALER 3 TIMES AND EACH TIM EIM TOLD THAT SINCE THERE ARE NO COMPUTER ERROR CODES IT HAS TO BE WORKING. THEY EVEN GAVE ME PAPERWORK WHERE GM TELLS THE MECHANIC WHAT TO TELL THE CUSTOMERS WHO COMPLAIN THAT THESE FEATURES AREN'T WORKING.

May 11, 2019

FORWARD COLLISION AVOIDANCE

1 complaint

TL* THE CONTACT OWNS A 2019 GMC TERRAIN. WHILE DRIVING 70 MPH WITH THE CRUISE CONTROL ENGAGED, THE AUTOMATIC EMERGENCY BRAKING SYSTEM INDEPENDENTLY ACTIVATED AND THE SPEED DECELERATED TO 45 MPH. THE CONTACT DEPRESSED THE ACCELERATOR PEDAL AND THE VEHICLE RETURNED TO CRUISE CONTROL MODE. THERE WAS NO WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO HALL BUICK GMC (LOCATED AT 3010 S SW LOOP 323, TYLER, TX 75701, (903) 771-2886) TO BE DIAGNOSED, BUT THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED AND PROVIDED CASE NUMBER: 9-5110159147. THE CONTACT WAS REFERRED TO NHTSA. THE APPROXIMATE FAILURE MILEAGE WAS 4,473.

Mar 14, 2019

2019 GMC Terrain Problems & Complaints

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