2012 GMC Sierra 1500 problems and complaints
Owners have filed 49 complaints with NHTSA about the 2012 GMC Sierra 1500. The most-reported areas: Electrical System (10), Unknown Or Other (10), Structure (10).
Key takeaways
- 49 owner complaints on file with NHTSA.
- 4 involve a crash, 2 a fire, 0 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 10 | 20% |
| Unknown Or Other | 10 | 20% |
| Structure | 10 | 20% |
| Service Brakes | 7 | 14% |
| Steering | 7 | 14% |
| Air Bags | 6 | 12% |
| Engine | 6 | 12% |
| Power Train | 4 | 8% |
| Suspension | 3 | 6% |
| Fuel/Propulsion System | 2 | 4% |
| Wheels | 2 | 4% |
| Electronic Stability Control (esc) | 2 | 4% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2012 GMC Sierra 1500 PU/CC 4WD | 4/5 | 4/5 | 5/5 | 4/5 |
| 2012 GMC Sierra 1500 PU/EC 4WD | 4/5 | 4/5 | 5/5 | 4/5 |
| 2012 GMC Sierra 1500 PU/RC 4WD | 4/5 | 4/5 | 5/5 | 4/5 |
| 2012 GMC Sierra 1500 PU/CC RWD | 4/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System,service Brakes,forward Collision Avoidance - filed 2026-08-11
June 29, 2025, Driving on the St. Francis loop in Amarillo, TX, brake lights start flashing, the warning sounds happening, no brakes. I had already slowed down to 35-45 mph due to road construction ahead. I weaved through the cones and as soon as possible, hit the ditch and then coasted to a stop. (I didn’t think ab...
Suspension,power Train,unknown Or Other - filed 2026-05-22
They should be responsible for repairs or replacement of the cheap made frames that rust away so fast so u ain’t gotta worry about your truck fallling apart going down the rd and the lower control arms made of cast that rust from inside out and you don’t know until breaks while driving along with camber adjustments whe...
Power Train - filed 2026-01-15
The contact owns a 2012 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted, especially between second and third gears. The check engine warning light was intermittently illuminated. In addition, the contact stated that the engine felt as though the ...
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More for the 2012 GMC Sierra 1500
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.