2018 GMC Terrain problems by component
215 owner complaints filed with NHTSA for the 2018 GMC Terrain, grouped by the component owners reported. Each component links to a detailed breakdown with mileage, severity and owner reports.
| Component | Complaints | Share | Median mileage |
|---|---|---|---|
| Service Brakes → | 66 | 31% | 34,000 mi |
| Engine → | 51 | 24% | 21,500 mi |
| Power Train → | 41 | 19% | 10,300 mi |
| Electrical System → | 35 | 16% | 24,500 mi |
| Air Bags → | 14 | 7% | — |
| Fuel/propulsion System → | 12 | 6% | — |
| Service Brakes, Hydraulic → | 11 | 5% | 95,200 mi |
| Forward Collision Avoidance | 8 | 4% | — |
| Vehicle Speed Control | 8 | 4% | — |
| Electronic Stability Control (esc) | 7 | 3% | — |
| Steering | 6 | 3% | — |
| Visibility/wiper | 4 | 2% | — |
| Seat Belts | 3 | 1% | — |
| Seats | 3 | 1% | — |
| Structure | 3 | 1% | — |
| Fuel System, Diesel | 2 | 1% | — |
| Lane Departure | 2 | 1% | — |
| Suspension | 2 | 1% | — |
| Wheels | 2 | 1% | — |
| Back Over Prevention | 1 | 0% | — |
| Engine and Engine Cooling | 1 | 0% | — |
| Exterior Lighting | 1 | 0% | — |
| Fuel System, Gasoline | 1 | 0% | — |
| Latches/locks/linkages | 1 | 0% | — |
| Service Brakes, Air | 1 | 0% | — |
| Tires | 1 | 0% | — |
| Visibility | 1 | 0% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.