Worst 2012 GMC Sierra Problems
Top 3 most-reported issues with average mileage at failure.
Electrical Faults
Engine Problems
Body Structure
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All Problems by Category
Every NHTSA complaint category for the 2012 GMC Sierra.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Electrical Faults | 6 | 1 | 1 | 35,344 mi | |
| Engine Problems | 5 | — | 2 | 39,800 mi | |
| Body Structure | 5 | — | 2 | 33,890 mi | |
| Airbags | 4 | 1 | — | — | |
| Brakes | 3 | 1 | — | — | |
| Steering Defects | 3 | 1 | — | — | |
| Electronic Stability Control | 2 | 1 | — | — | |
| Transmission / Drivetrain | 2 | — | — | — | |
| Suspension Failures | 2 | 1 | — | — | |
| Unintended Acceleration | 2 | — | — | — | |
| Electrical System:Wiring:Interior/Under Dash | 1 | — | — | — | |
| Engine & Cooling | 1 | — | — | — | |
| Headlight/Taillight Failures | 1 | — | 1 | — | |
| Latches/Locks/Linkages:Doors:Latch | 1 | — | — | — | |
| Hydraulic Brakes | 1 | 1 | — | — | |
| Structural Problems | 1 | — | — | — | |
| Wipers & Visibility | 1 | — | — | — | |
| Visibility:Power Window Devices And Controls | 1 | — | — | — | |
| Wheel Issues | 1 | — | 1 | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2012 GMC Sierra. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2012 GMC Sierra
2 NHTSA recall campaigns affecting ~93,925 vehicles.
General Motors LLC (GM) is recalling certain model year 2011-2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado HD, Silverado LD, Suburban, Tahoe, GMC Sierra LD, Sierra HD, Yukon, and Yukon XL vehicles. In the affected vehicles, the ignition lock actuator may bind, making turning the key difficult or causing the ignition to get stuck in the "Start" position.
General Motors LLC (GM) is recalling certain model year 2012-2013 Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with 6.6L diesel engines and dual fuel tanks. In the affected vehicles, the transfer pump which moves fuel from the rear tank to the front tank could malfunction and cause the fuel gauge to indicate an inaccurate reading.
Other GMC Sierra Years
2012 GMC Sierra — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2012 GMC Sierra reliable?
What are common problems with the 2012 GMC Sierra?
At what mileage do problems start on the 2012 GMC Sierra?
How safe is the 2012 GMC Sierra?
Does the 2012 GMC Sierra have any recalls?
Should I buy a 2012 GMC Sierra?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full GMC Sierra reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2012 GMC Sierra
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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