2020 GMC Sierra 1500 problems by component
441 owner complaints filed with NHTSA for the 2020 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 → | 213 | 48% | 48,000 mi |
| Power Train → | 88 | 20% | 75,325 mi |
| Electrical System → | 77 | 17% | 9,650 mi |
| Service Brakes → | 48 | 11% | 9,010 mi |
| Steering → | 37 | 8% | 10,300 mi |
| Fuel/propulsion System → | 24 | 5% | — |
| Engine and Engine Cooling → | 18 | 4% | 88,500 mi |
| Suspension → | 18 | 4% | — |
| Forward Collision Avoidance → | 14 | 3% | — |
| Structure → | 12 | 3% | — |
| Visibility/wiper → | 12 | 3% | — |
| Vehicle Speed Control → | 10 | 2% | — |
| Air Bags | 6 | 1% | — |
| Electronic Stability Control (esc) | 6 | 1% | — |
| Lane Departure | 5 | 1% | — |
| Back Over Prevention | 4 | 1% | — |
| Exterior Lighting | 3 | 1% | — |
| Service Brakes, Hydraulic | 3 | 1% | — |
| Equipment | 2 | 0% | — |
| Parking Brake | 2 | 0% | — |
| Seat Belts | 2 | 0% | — |
| Tires | 2 | 0% | — |
| Visibility | 2 | 0% | — |
| Service Brakes, Air | 1 | 0% | — |
| Traction Control System | 1 | 0% | — |
| Wheels | 1 | 0% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.