2018 Gmc Terrain: owner complaints and recalls
Analysis of 214 owner complaints filed with NHTSA and 5 recall campaigns. Updated 2026-07-25.
214
Complaints
5
Recalls
14
Crash reports
1
Fire reports
12
Injuries
73.8
Severity index
Severity index 73.8 - Medium. This weights crashes, fires, injuries and fatalities per 100 complaints; see methodology.
Among the 121 2018 vehicles we track with at least 40 complaints on file, the 2018 Gmc Terrain ranks 41 of 121 by severity, where 1 is the worst. Its severity is higher than 66% of its model-year peers. See the full 2018 ranking.
What actually fails
| Component | Complaints | Share of complaints citing it |
|---|---|---|
| SERVICE BRAKES | 77 | 36.0% |
| ENGINE | 51 | 23.8% |
| POWER TRAIN | 41 | 19.2% |
| ELECTRICAL SYSTEM | 35 | 16.4% |
| UNKNOWN OR OTHER | 33 | 15.4% |
| AIR BAGS | 14 | 6.5% |
| FUEL/PROPULSION SYSTEM | 12 | 5.6% |
| HYDRAULIC | 10 | 4.7% |
The single most-reported system is SERVICE BRAKES, cited in 77 of 214 complaints (36.0%). One complaint can name several systems, so these shares overlap and do not total 100%.
Complaints filed per year
| Year | Complaints |
|---|---|
| 2017 | 2 |
| 2018 | 24 |
| 2019 | 28 |
| 2020 | 11 |
| 2021 | 17 |
| 2022 | 27 |
| 2023 | 28 |
| 2024 | 36 |
| 2025 | 25 |
| 2026 (year to date) | 16 |
Complaint volume is rising - the last three years carry 1.6x the filings of the three before them, which usually signals a wear-related defect surfacing with age.
Recall campaigns
| Campaign | Reported | Component | Summary |
|---|---|---|---|
| 18V340000 | 24/05/2018 | AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE | General Motors LLC (GM) is recalling certain 2018 GMC Terrain vehicles. The sensing diagnostic module (SDM) that senses a crash and deploys the necessary air bags may not power down correctly when the vehicle is shut off, causing it to be inoperative when the vehicle is restarte |
| 18V576000 | 30/08/2018 | SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER | General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Equinox, Impala, Cruze, Volt and Bolt EV vehicles, GMC Terrain vehicles, Buick Lacrosse and Regal vehicles, Cadillac XTS and XTS Professional vehicles and 2018 Chevrolet Malibu vehicles. The rear brake caliper pisto |
| 18V358000 | 31/05/2018 | FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP | General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles. The high pressure fuel pump may detach from |
| 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 |
| 17V516000 | 22/08/2017 | POWER TRAIN:DRIVELINE:DRIVESHAFT | General Motors LLC (GM) is recalling certain 2018 Chevrolet Equinox and GMC Terrain vehicles and 2017-2018 GMC Acadia vehicles. The right front intermediate driveshaft may fracture and separate while driving. |
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.