AI DamageGMC C15: problems, complaints, bulletins
Summary for the GMC C15 across 10 model years: 40 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Seats 38% of all complaints
- 2 Service brakes 15% of all complaints
- 3 Electrical system 10% of all complaints
- 4 Powertrain 10% of all complaints
- 5 Steering 8% of all complaints
- 6 Vehicle speed control 8% of all complaints
- 7 Seat belts 5% of all complaints
- 8 Air bags 3% of all complaints
- Seats: 15 complaints (38% of all), 1 of them with a crash reported by the owner.
- Service brakes: 6 complaints (15% of all), 2 of them with a crash reported by the owner.
- Electrical system: 4 complaints (10% of all).
- Powertrain: 4 complaints (10% of all).
- Steering: 3 complaints (8% of all), 1 of them with a crash reported by the owner.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4.1 L · petrol · 6 cyl 1984
- 4.3 L · petrol · 6 cyl 1985–1988
- 5 L · petrol · 8 cyl 1984–1988
- 5.7 L · petrol · 8 cyl 1988
- 6.2 L · diesel · 8 cyl 1984–1988
- automatic, 3-speed 1984–1988
- automatic, 4-speed 1984–1988
- manual, 3-speed 1984–1986
- manual, 4-speed 1984–1988
- manual, 5-speed 1988
Drive: RWD
Symptoms owners describe
How many of the 40 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Seats | 15 | 1 | 0 |
| Service brakes | 6 | 2 | 0 |
| Electrical system | 4 | 0 | 0 |
| Powertrain | 4 | 0 | 0 |
| Steering | 3 | 1 | 0 |
| Vehicle speed control | 3 | 0 | 0 |
| Seat belts | 2 | 0 | 0 |
| Air bags | 1 | 1 | 0 |
| Structure | 1 | 0 | 0 |
| Visibility | 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.
Abs: while towing a trailer in stop/go traffic, dry surface; abs would not allow wheel lock up; ran into another truck; solely because of abs failure. Tt
Abs brakes failed while pulling in driveway-hit another auto but no injuries. Tt
Had accident and drivers air bag did not deploy- injuried back. Tt
The steering column broke while driving in between impact. Please describe. Tt
While driving during rainy weather front windshield wipers failed.
Recall # 95v246000 interior systems: seats, dealer does not have part to correct recall campaign. Owner is requesting a new seat. Please provide any further information.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Seats. Occupant sensor, power adjustment, seat mounts.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Other models of this make
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.