2020 GMC Terrain fuel/propulsion system problems
25 owner complaints filed with NHTSA name the fuel/propulsion system on the 2020 GMC Terrain — 13% of all complaints for this model year.
What owners report
“Fuel pump control module and or the in tank fuel pump failed and or isn’t making proper connection for car to run correctly. Safety was put at risk as car came to abrupt halt while driving. Driver was outside of vehicle at busy intersection for vehicle diagnostics and battery jump. Battery was…”
filed Sep 2, 2026
“COMPONENT OR SYSTEM FAILED - GMC Dealership replacing fuel pump. SAFETY OR SAFETY OF OTHERS AT RISK - stalled in remote area with no internet/cell service. In order to get to safety we travelled 13 miles of narrow 2 lane roads with no shoulder or escape areas. Road included 3 miles of a steep…”
filed Aug 24, 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 | 20% |
| 2023 Terrain | 14 | 37% |
| 2022 Terrain | 27 | 46% |
| 2021 Terrain | 2 | 6% |
| 2019 Terrain | 4 | 2% |
| 2018 Terrain | 12 | 5% |
| 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.