2021 GMC Sierra 2500 problems by component
51 owner complaints filed with NHTSA for the 2021 GMC Sierra 2500, grouped by the component owners reported. Each component links to a detailed breakdown with mileage, severity and owner reports.
| Component | Complaints | Share | Median mileage |
|---|---|---|---|
| Power Train → | 12 | 24% | — |
| Exterior Lighting | 9 | 18% | — |
| Engine | 8 | 16% | — |
| Electrical System | 6 | 12% | — |
| Service Brakes | 6 | 12% | — |
| Structure | 5 | 10% | — |
| Latches/locks/linkages | 4 | 8% | — |
| Forward Collision Avoidance | 3 | 6% | — |
| Air Bags | 2 | 4% | — |
| Fuel/propulsion System | 2 | 4% | — |
| Back Over Prevention | 1 | 2% | — |
| Lane Departure | 1 | 2% | — |
| Parking Brake | 1 | 2% | — |
| Seat Belts | 1 | 2% | — |
| Tires | 1 | 2% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.