2021 CADILLAC XT6 Problems

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Complaints Reported

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Complaints by Component

UNKNOWN OR OTHER

3 complaints

[XXX] My 2021 XT6 occasionally stumbles when accelerating from a stop, both when the engine is running or when it has auto stopped, only occasionally. If the car won't accelerate properly, it can cause a collision, especially if making a left hand turn at an intersection. It started happening about June 2025 and kept reoccurring more frequently as time passed. It was brought to a dealer early August, they said that it might be a bad battery, I installed a new battery on August 19, 2025, it was ok until late November 2025, then it started happening again. Yes, it can be inspected upon request. There were no warning lamps or messages, symptoms or problems prior to the failure. This has been happening about 6 months now. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Dec 31, 2025

front and rear vision camera abruptly stopped working. bought car used [XXX]. dealer should not have sold car without fixing recall. dealer serpentini of medina, oh claimed cadilac had recall on front brakes, and replaced pads. when in fact recall was about cable systems for cameras. what recourse do i have? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Jun 30, 2025

The Sunroof popped and shattered. I was on the highway with very light traffic - cars were at least 200 feet apart - when I heard a loud boom and then felt and saw the sunroof cover start vibrating. It was not the small smack of a rock - it was a loud pop and I wondered if my muffler had just fallen off the car. But when the sunroof started vibrating I knew that my sunroof was gone. I had not opened the sunroof that day, which is rare for me since I like to have the sun shining through, therefore, no glass fell into the car. Since there was no one behind me I do not think glass flew into traffic behind me. It was a normal, hot September day in Texas, nothing abnormally hot or cold. I have not changed or altered any stereo or other equipment in the vehicle.

Sep 18, 2021

BACK OVER PREVENTION

3 complaints

The contact owns a 2021 Cadillac XT6. The contact stated while in reverse, the back-over prevention camera image failed to display as intended on the screen. No warning light was illuminated. The contact stated that the message "Park Assist Block" was displayed on the instrument panel. The vehicle was taken to a local dealer, where it was diagnosed with a camera sensor failure. The vehicle was not repaired. Upon further investigation, the contact related the failure to an unidentified recall related to the failure; however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.

Apr 22, 2025

In April 2023 I was backing out of a parking space when a message displayed on the dash that “The Parking Assist Have Been Blocked, See Owner’s Manual “. In this event there were pedestrians walking behind my vehicle and if not for my cautions always while backing could have caused an accident. This has since been intermittently happening and I have taken it in to the dealer 2 times without repair.

Sep 06, 2023

The contact owns a 2021 Cadillac XT6.The contact stated that while reversing, the rear-view camera displayed his vehicle instead of other vehicles nearby. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Number: 22V709000 (Back Over Prevention) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was approximately 7,000. Parts distribution disconnect.

Apr 05, 2023

ENGINE AND ENGINE COOLING

1 complaint

The contact owns a 2021 Cadillac XT6. The contact stated that while sitting inside the vehicle, the vehicle felt unbalanced. Upon inspection, the contact noticed that the H-pipe was leaning more to the right side. The H-pipe was not centered as intended. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The contact stated that in the past, while the vehicle was serviced, no one had noticed that the H-pipe was off-center. The manufacturer was not notified of the failure. The failure mileage was approximately 37,000.

Jan 06, 2026

ELECTRICAL SYSTEM

1 complaint

The vehicle was previously recalled for an intermittent backup camera failure. Prior to me purchasing the vehicle, the recall was completed and documented as repaired. I went in to the Myrtle Beach Cadillac dealership for reoccurring issues with the camera failing exactly as disclosed in the recall. It will randomly cut to a black screen with a camera icon crossed out in red. It is a true safety issue that leaves my family as risk of a collision or injuring someone else.It cannot be recreated on request as it is happening intermittently. The dealership refused to inspect the safety recall repair for proper operation and only stated that the recall repair was completed.

Jan 05, 2026

ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE

1 complaint

RECALL FOR CABLE FOR VISION SYSTEM REPAIRED 5/28/2025. ON 6/29/25 SAME ISSUES OCCURED. TOOK TO DEALER 7/18/25. DEALER CONFIRMED CABLE REPLACED. ATTEMPTED TO REPROGRAM VIDEO PROCESSING CENTER SEVERAL TIMES ( I WAS AT DEALER 7 HOURS). DEALER INDICATED THAT THE VIDEO PROCESSING CONTROL MODULE IS NOT ACCEPTING RE-PROGRAMMING. INDCATED THAT PART MUST BE REPLACED AT A COST OF $973.00. SYMBOLS APPEARED ON DASHBOARD SCREEN : TRIANGLE WITH EXCAMATION POINT, AND BOX WITH "X" THRU A CAMERA. CAR IS DIFFICULT TO SEE OUT OF WHEN BACKING DUE TO PILLAR PLACEMENT IN REAR. RELY ON CAMERA(S) ON 4 SIDES OF CAR TO SEE WHAT IS GOING ON. I SEE THAT SEVERAL OTHER GM MODELS HAVE HAD THIS PROBLEM.

Jul 19, 2025

STEERING,ENGINE

1 complaint

1)The display on dash reads upon start up, “Steering Assist Reduced”. 2)There is no Engine temperature readout displayed on cluster. 3)When the vehicle is turned off, the coolant fan stays running for a few minutes at full speed. All of these issues are correlated. Also, many XT5’s & XT6’s have had this issue in the past.

Jan 29, 2025

ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

1 complaint

Car started and ran at idle for 5 minutes. 10 minutes later when attempting to restart, the engine churned for several seconds then ran for about 2 seconds and cut out. "Press to Start" button remained showing green and would not respond to being pressed. The car was stationary in my garage; this would have been extremely dangerous if it happened on the highway. It seems to be a complete failure of the fuel system on a 2021 model with under 27,000 miles

Sep 29, 2024

ENGINE,FUEL/PROPULSION SYSTEM

1 complaint

The vehicle's check engine light came on late afternoon and then started with a delayed turn over, but not actually starting thr following day. The vehicle had to be towed to the dealership. The technician and service advisor commented immediately that it is likely the fuel pump control module. With the commentary about the likely cause was that this is a widespread issue among GM vehicles. Thankfully, the vehicle was at home when it stopped starting but the transition from check engine to stopping operation was almost immediate.

Dec 13, 2023

FUEL/PROPULSION SYSTEM

1 complaint

The problem is the fuel pump control module is faulty and broke twice now. The car was purchased in 2021, new. Within months the fuel pump control module failed while I was driving in traffic, in an elementary school zone with children all around. I tried to drive through an intersection when without warning the car abruptly stopped causing the cars behind me to swerve to avoid a collision. Good samaritans had to push it far out of the way due to the children crossing. I was told by Sawgrass Cadillac that it was the fuel pump control module that has a short starving the car for fuel without warning because it is an electrical issue. It was fixed, until July 4, 2023 when again while in traffic the engine light came on, the car shuddered and then abruptly stopped. Cars around me swerved, nearly colliding into me with my daughter in the car. Sawgrass Cadillac again said it is the fuel pump control module that they are looking to replace it again. This is a design failure, one that is well known and documented all over the internet. This design needs to be recalled before someone is killed because if I had made it to the highway and this happened who knows what could have happened. I will not drive the car, it is a life safety issue that is cannot be repaired away, it needs to be completely redesigned. The dealer is aware, but you can contact them for further information. The dealer is Sawgrass Cadillac in Sunrise Florida, Ed Morse.

Jul 07, 2023

FORWARD COLLISION AVOIDANCE

1 complaint

I was driving about 25mph all of the sudden the car automatic applied the brakes.

Jun 19, 2023

SERVICE BRAKES

1 complaint

Front brake vibration, alarming grinding/rubbing/screeching sound each and every time service brakes are applied. Dealer claims this is a known GM problem with no fix available. I have purchased two Cadillacs Xt6 and Xt5 May 2021. Both vehicles have the same problem. Wife will not drive the new Cadillac. Service bulletin published sbout this same problem, December 2020. Still no resolution, June 2021.

Jun 22, 2021

4.4/5.0

87 reviews

Where to Find VIN for Problems Check

To check for problems and complaints on your 2021 CADILLAC XT6, you'll need the VIN number. Find your VIN in one of these 4 common locations.

Where to Find VIN Number on 2021 CADILLAC XT6 for Problems Lookup - Dashboard, Door Jamb, Engine Bay, Documents

Understanding VIN Structure for Problem Reports

Each character in your 2021 CADILLAC XT6 17-digit VIN helps identify specific complaints and problems affecting your vehicle model.

2021 CADILLAC XT6 VIN Structure for Complaint Verification - WMI, VDS, Check Digit, Model Year, Plant Code

How to Check 2021 CADILLAC XT6 Problems in 3 Steps

Locate Your VIN

Find the 17-character VIN on your 2021 CADILLAC XT6 dashboard (visible through windshield), door jamb, engine bay, or vehicle documents.

Review by Component

Browse owner-reported complaints organized by vehicle component (engine, transmission, brakes, electrical) to identify common issues and problem patterns for this model year.

Check Safety Issues

Review crash and fire incidents for each component to assess safety concerns. Contact your CADILLAC dealer or report problems to NHTSA at SaferCar.gov.

Frequently Asked Questions

How many problems does the 2021 CADILLAC XT6 have?

The 2021 CADILLAC XT6 currently has 15 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 2021 CADILLAC XT6?

The most common problems reported for the 2021 CADILLAC XT6 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 2021 CADILLAC XT6 problem data come from?

All problem and complaint data for the 2021 CADILLAC XT6 comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

How do I report problems with my 2021 CADILLAC XT6?

You can report safety problems with your 2021 CADILLAC XT6 directly to NHTSA at SaferCar.gov or call 1-888-327-4236. Your complaint helps identify patterns and may lead to recalls or investigations.

Where can I find my VIN to check problems?

Your 2021 CADILLAC XT6 VIN is located in 4 places: (1) Dashboard near windshield on driver's side, (2) Driver's door jamb sticker, (3) Engine bay, (4) Vehicle registration and insurance documents.

Is the 2021 CADILLAC XT6 reliable?

Reliability can be assessed by reviewing the number and severity of owner complaints for the 2021 CADILLAC XT6. Check complaints by component, crash reports, and fire incidents above to evaluate potential issues and problem patterns.