2019 GMC Terrain engine problems
68 owner complaints filed with NHTSA name the engine on the 2019 GMC Terrain — 37% of all complaints for this model year.
What owners report
“On 9/15/2026, my wife drove her car, a 2019 GMC Terrain, to a doctor's appointment. She reported no known issues with the way the car operated during her drive nor had she or I experienced issues prior to this event. After she finished her appointment, she attempted to start her car and was unable…”
filed Sep 17, 2026
“While driving my 2019 GMC Terrain with three children as passengers, the vehicle developed a braking/engine problem. The brake pedal became very hard, and the vehicle subsequently became undrivable and would not start. I received no advance warning through the GMC app indicating that the vacuum…”
filed Sep 4, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Terrain years
| Year | Reports | Share |
|---|---|---|
| 2026 Terrain | 1 | 3% |
| 2024 Terrain | 11 | 22% |
| 2023 Terrain | 14 | 37% |
| 2022 Terrain | 10 | 17% |
| 2021 Terrain | 9 | 26% |
| 2020 Terrain | 57 | 29% |
| 2018 Terrain | 53 | 24% |
| 2017 Terrain | 77 | 58% |
| 2016 Terrain | 46 | 30% |
| 2015 Terrain | 80 | 27% |
| 2014 Terrain | 123 | 42% |
| 2013 Terrain | 197 | 54% |
Other reported problem areas on the 2019 GMC Terrain
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.