AI DamageGMC L Series: problems, complaints, bulletins
Summary for the GMC L Series across 3 model years: 151 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 2003 | 149 | 8 | 0 | 0 |
| 2001 | 1 | 0 | 0 | 0 |
| 2000 | 1 | 0 | 0 | 0 |
What fails most often
- 1 Equipment 98% of all complaints
- 2 Engine and cooling 1% of all complaints
- 3 Air bags 1% of all complaints
- 4 Electrical system 1% of all complaints
- 5 Exterior lighting 1% of all complaints
- 6 Vehicle speed control 1% of all complaints
- 7 Visibility 1% of all complaints
- Equipment: 148 complaints (98% of all), 8 of them with a crash reported by the owner.
- Engine and cooling: 2 complaints (1% of all).
- Air bags: 1 complaints (1% of all).
- Electrical system: 1 complaints (1% of all).
- Exterior lighting: 1 complaints (1% of all).
Symptoms owners describe
How many of the 151 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) |
|---|---|---|---|
| Equipment | 148 | 8 | 0 |
| Engine and cooling | 2 | 0 | 0 |
| Air bags | 1 | 0 | 0 |
| Electrical system | 1 | 0 | 0 |
| Exterior lighting | 1 | 0 | 0 |
| Vehicle speed control | 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.
I was told they could not repair my car because the headlight was on a national backorder. They said there were no headlights available. My insurance covered a rental car for 30 days. I was then told I would be responsible for a car. It was suggested that I call cadillac customer service. I did so.
The ramp is controlled by a signal and I was waiting my turn when the engine failed. I was coasting downhill into another car when I hit the brakes and there were no brakes. I bumped the car in front of me damaging the front grill and hood of my car.
Side impact failure, steering failure, anti-lock brake failure. Severe right side impact on february 28, 2005 moderate weather conditions. Anti-lock brakes failed to stop the car. Which caused the car hard to steer. A 2003 honda pilot wrecked head-on into the side of a 1993 geo prizm.
August 2008 - fan clutch failure, $800 dealership charge to fix october 2008 - blower motor failure, no heat or air on speeds 1, 2 & 4, only on settings 3 & 5, not sure if it is blower motor or switch.
The check engine light illuminates often. The dealer stated that the cam shaft sensor needed to be replaced. The current and failure mileages were 84,561.
The horn was inoperative and the air bag light illuminated while driving. 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
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
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 2026-11-06.