2021 GMC Sierra 1500 problems by component
528 owner complaints filed with NHTSA for the 2021 GMC Sierra 1500, grouped by the component owners reported. Each component links to a detailed breakdown with mileage, severity and owner reports.
| Component | Complaints | Share | Median mileage |
|---|---|---|---|
| Engine → | 275 | 52% | 57,000 mi |
| Power Train → | 129 | 24% | 66,781 mi |
| Electrical System → | 71 | 13% | 31,150 mi |
| Engine and Engine Cooling → | 46 | 9% | 54,250 mi |
| Fuel/propulsion System → | 33 | 6% | — |
| Steering → | 32 | 6% | — |
| Service Brakes → | 22 | 4% | — |
| Structure → | 11 | 2% | — |
| Latches/locks/linkages | 9 | 2% | — |
| Lane Departure | 8 | 2% | — |
| Suspension | 8 | 2% | — |
| Air Bags | 6 | 1% | — |
| Forward Collision Avoidance | 6 | 1% | — |
| Visibility/wiper | 6 | 1% | — |
| Vehicle Speed Control | 5 | 1% | — |
| Wheels | 5 | 1% | — |
| Back Over Prevention | 4 | 1% | — |
| Tires | 4 | 1% | — |
| Seat Belts | 3 | 1% | — |
| Exterior Lighting | 2 | 0% | — |
| Fuel System, Diesel | 1 | 0% | — |
| Fuel System, Gasoline | 1 | 0% | — |
| Seats | 1 | 0% | — |
| Service Brakes, Hydraulic | 1 | 0% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.