2019 GMC Terrain problems and complaints
Owners have filed 186 complaints with NHTSA about the 2019 GMC Terrain. The most-reported areas: Service Brakes (72), Engine (70), Power Train (52).
Key takeaways
- 186 owner complaints on file with NHTSA.
- 7 involve a crash, 3 a fire, 12 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Service Brakes | 72 | 39% |
| Engine | 70 | 38% |
| Power Train | 52 | 28% |
| Electrical System | 39 | 21% |
| Unknown Or Other | 21 | 11% |
| Vehicle Speed Control | 9 | 5% |
| Hydraulic | 7 | 4% |
| Back Over Prevention | 7 | 4% |
| Forward Collision Avoidance | 6 | 3% |
| Electronic Stability Control (esc) | 6 | 3% |
| Exterior Lighting | 5 | 3% |
| Fuel/Propulsion System | 4 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2019 GMC Terrain SUV FWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2019 GMC Terrain SUV AWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Power Train,service Brakes,engine - filed 2026-10-13
VIN: [XXX] Mileage: Approximately 103,576 Incident location: [XXX] Safety Complaint: While my wife was driving our 2019 GMC Terrain into a shopping center parking lot, the vehicle suddenly experienced a severe loss of braking assistance. The brake pedal became extremely stiff and difficult to depress, and she was b...
Electrical System,service Brakes,engine - filed 2026-09-24
While driving on an interstate, vehicle became sluggish when accelerating. Took off on exit, engine was reduced to 50% power, attempted to drive to large parking lot, lost brakes, got the vehicle stopped in an intersection, would not shut off, go into neutral. Finally shut off, had to call tow truck, holding up traff...
Power Train - filed 2026-09-23
The contact owns a 2019 GMC Terrain. The contact stated that after pulling into a parking lot, the vehicle failed to shift into park. The vehicle was towed to a dealer where the contact was informed that three fault codes were found. The dealer informed the contact that the transmission needed to be disassembled for a ...
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More for the 2019 GMC Terrain
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.