2020 Gmc Terrain: owner complaints and recalls
Analysis of 183 owner complaints filed with NHTSA and 2 recall campaigns. Updated 2026-07-25.
183
Complaints
2
Recalls
7
Crash reports
2
Fire reports
5
Injuries
43.7
Severity index
Severity index 43.7 - Medium. This weights crashes, fires, injuries and fatalities per 100 complaints; see methodology.
Among the 103 2020 vehicles we track with at least 40 complaints on file, the 2020 Gmc Terrain ranks 62 of 103 by severity, where 1 is the worst. Its severity is higher than 40% of its model-year peers. See the full 2020 ranking.
What actually fails
| Component | Complaints | Share of complaints citing it |
|---|---|---|
| SERVICE BRAKES | 65 | 35.5% |
| ENGINE | 54 | 29.5% |
| UNKNOWN OR OTHER | 32 | 17.5% |
| ELECTRICAL SYSTEM | 27 | 14.8% |
| POWER TRAIN | 25 | 13.7% |
| FUEL/PROPULSION SYSTEM | 21 | 11.5% |
| VEHICLE SPEED CONTROL | 11 | 6.0% |
| FORWARD COLLISION AVOIDANCE | 8 | 4.4% |
The single most-reported system is SERVICE BRAKES, cited in 65 of 183 complaints (35.5%). One complaint can name several systems, so these shares overlap and do not total 100%.
Complaints filed per year
| Year | Complaints |
|---|---|
| 2019 | 1 |
| 2020 | 10 |
| 2021 | 14 |
| 2022 | 13 |
| 2023 | 29 |
| 2024 | 25 |
| 2025 | 63 |
| 2026 (year to date) | 28 |
Complaint volume is rising - the last three years carry 3.2x the filings of the three before them, which usually signals a wear-related defect surfacing with age.
Recall campaigns
| Campaign | Reported | Component | Summary |
|---|---|---|---|
| 20V668000 | 29/10/2020 | POWER TRAIN:AUTOMATIC TRANSMISSION | General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadill |
| 23V339000 | 11/05/2023 | CHILD SEAT:VEHICLE LATCH ANCHOR | General Motors, LLC (GM) is recalling certain 2020-2023 Chevrolet Equinox and GMC Terrain vehicles. The four rear-seat lower child seat LATCH anchorage bars may have excessive powder coating, which could prevent a child seat from being installed with the anchorage bars. As such |
Source. US National Highway Traffic Safety Administration public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-07-25. Complaints are unverified consumer reports; volume is influenced by how many units were sold and how long the vehicle has been on the road. Not affiliated with NHTSA or any manufacturer.