Owners have filed 3 complaints on the Chevrolet GMT-400, covering 1999–1999. The system named most often is Service Brakes (2 reports). Worst years by volume: 1999; cleanest: 1999. On average the car was 7.3 years old when the problem happened.
What breaks on Chevrolet GMT-400
Grouped by the system owners named — percentages are shares of all 3 GMT-400 complaints. Open any row for the full reports in owners' own words.
Service Brakes 2 Read
I have a 1999 chevrolet gmt-400 pickup with ABS brakes. The ABS sensor is defective, causing the ABS to activate at low speeds,such as in parking lots. I have had a lot of close calls due to this manufacturing defect. General motors corporation had a recall on 1999 chevy silverados due to this manufacturing defect.…
Pressed the brakes and the pedal went to the floor. After inspection I found that the rear steel brake line failed. If I had not been pulling down the driveway when this happened and on the street I may have crashed as a result. The failure point is right beside the diesel tank on the frame rail
Fuel System 1 Read
Consumer noticed gas dripping from the tank, took to service station he was told that the tank was severely dented and had ruptured, replaced fuel tank. A few weeks later the same thing happened and fuel replaced fuel tank
GMT-400 years to avoid — and the clean ones
Complaints per model year. More reports usually means more cars on the road as well as more trouble, so read the crash and fire columns alongside the count.
| Model year | Complaints | Top system | Crashes | Fires |
|---|---|---|---|---|
| 1999 | Fuel System, Gasoline | — | — |
The same model year, different builds
Every complaint carries the first 11 characters of the VIN — plant, year, body and engine. That is a production series, and complaints are spread across them very unevenly.
| Measure | Value |
|---|---|
| Distinct production series | 3 |
| Average complaints per series | 1 |
| Worst single series | 1 complaints |
| Average age at failure | 7.3 years |
A model average of 1 hides a worst series at 1. Enter a VIN above to see the numbers for that exact build instead of the model as a whole.
Owners reported these. Find out if yours is one of them.
- Complaints matched to the exact production run, not just the model
- What the car is worth given what tends to fail on it
- The original window sticker and factory options
- Full research report as a PDF for the pre-purchase inspection
- No ads, on every page
- No ads, no tracking — and much more
How we count
Every figure here comes from complaints owners filed with NHTSA — 1,100,006 of them, covering 1,982 models built between 1981 and 2026.
A complaint is an unverified report: someone wrote down what happened to their car. It is not a confirmed defect and not a recall. What makes the volume useful is the pattern — when thousands of owners of the same build describe the same failure, that is a signal no marketing brochure will give you.
Two things we do that the source does not. First, we compute the age of the car at the moment of failure from the incident date and the model year. Second, we group complaints by the first 11 characters of the VIN — the production series — so a bad plant run does not disappear into a model-wide average.
Frequently asked questions
What are the worst years for the GMT-400?
By complaint volume, 1999 drew the most owner reports. Bear in mind that popular years put more cars on the road, so check the crash and fire columns too.
Which GMT-400 years are the cleanest?
1999 have the fewest complaints on file. For recent years that can simply mean the cars are young.
How many complaints does the Chevrolet GMT-400 have?
3 owner complaints filed with NHTSA, covering 1999–1999. Of those, 0 describe a crash and 0 a fire.
Are these complaints verified?
No. They are unverified reports from owners. NHTSA publishes them as filed and investigates only a fraction. The value is in the pattern, not in any single report.
Can I check complaints for one specific car?
Yes — enter its VIN above. We match the first 11 characters, which identify the plant, year, body and engine, so you get complaints on that exact production series rather than the whole model.