2020 GMC Terrain fuel/propulsion system problems
22 owner complaints filed with NHTSA name the fuel/propulsion system on the 2020 GMC Terrain — 12% of all complaints for this model year.
What owners report
“Because of the intentional failure of GMC and there promise of “We are Professional Grade”, I almost got plowed down by a semi when the car began to quit on the highway going 60. After pulling into the next driveway, which happened to be a Parker’s Kitchen, and ending up on the curb spot, thanking…”
filed Aug 5, 2026
“Vehicle was filled with a full tank of gas, went to crank the car up to go home from work it acted like it wanted to crank but seemed to be getting no gas. Diagnostic was performed and the fuel pump control module failed. I thank God It did not start because if it did and I just so happen to pull…”
filed Jul 10, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Terrain years
| Year | Reports | Share |
|---|---|---|
| 2024 Terrain | 10 | 21% |
| 2023 Terrain | 14 | 39% |
| 2022 Terrain | 20 | 42% |
| 2021 Terrain | 2 | 6% |
| 2019 Terrain | 4 | 2% |
| 2018 Terrain | 12 | 6% |
| 2017 Terrain | 4 | 3% |
| 2016 Terrain | 3 | 2% |
| 2015 Terrain | 15 | 5% |
| 2014 Terrain | 15 | 5% |
| 2013 Terrain | 21 | 6% |
| 2012 Terrain | 28 | 8% |
Other reported problem areas on the 2020 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.