AI Damage1999 Chevrolet GMT 400: common problems
Owners of the 1999 Chevrolet GMT 400 filed 3 complaints with NHTSA, most often about service brakes and fuel system. Details by component below, with sources.
Key figures
- Owner complaints
- 3
What fails most often
- 1 Service brakes 67% of all complaints
- 2 Fuel system 33% of all complaints
- Service brakes: 2 complaints (67% of all).
- Fuel system: 1 complaints (33% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Service brakes | 2 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
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.
They removed and cleaned the abs sensors and coated them with a substance to prevent future rusting of the components. I went to a chevrolet dealership to check on this recall for my vehicle. I was told it was not covered under the recall.
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.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 17,150 of 36,656 model years in the NHTSA data (top 47% most complained about).
On average one model year of the GMT 400 has 4 complaints (2 years in the data). This year has 3, about average.
What to check before buying
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
Other years of this model
Questions and answers
What are the most common problems with the 1999 Chevrolet GMT 400?
Owner complaints to NHTSA most often mention: service brakes, fuel system. Total complaints: 3. The most frequent symptoms in complaint texts: rust, corrosion (33%).
How many service bulletins (TSB) were issued for the 1999 Chevrolet GMT 400?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 1999 Chevrolet GMT 400 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 1999 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.