2018 Gmc Terrain problems and recalls

Owners filed 89 complaints on the 2018 Gmc Terrain in the last three full years, out of 219 on record. The most cited component is the Service Brakes.

219
Complaints
5
Recalls
14
Crash reports
1
Fire reports
12
Injuries
68.6
Severity index

Severity index 68.6 Medium. The index weights crashes, fires, injuries and fatalities per 100 complaints. How it is calculated.

Middle half of all tracked vehiclesThis vehicle: 68.6p25 46p75 80cleanestworst
Severity index against the quartile range for all tracked vehicles.

Ranked 37 of 122 by severity index among 2018 vehicles with at least 40 complaints, highest first. 70% of those vehicles scored lower. Full 2018 ranking.

Components cited in complaints

Service BrakesService Brakes: 81 complaints (37.0%)81 37%EngineEngine: 53 complaints (24.2%)53 24%Power TrainPower Train: 41 complaints (18.7%)41 19%Electrical SystemElectrical System: 35 complaints (16.0%)35 16%Unknown Or OtherUnknown Or Other: 34 complaints (15.5%)34 16%Air BagsAir Bags: 14 complaints (6.4%)14 6%HydraulicHydraulic: 12 complaints (5.5%)12 5%Fuel/Propulsion SystemFuel/Propulsion System: 12 complaints (5.5%)12 5%
A single complaint can cite more than one component, so shares total over 100%.
ComponentComplaintsShare of complaints citing it
SERVICE BRAKES8137.0%
ENGINE5324.2%
POWER TRAIN4118.7%
ELECTRICAL SYSTEM3516.0%
UNKNOWN OR OTHER3415.5%
AIR BAGS146.4%
HYDRAULIC125.5%
FUEL/PROPULSION SYSTEM125.5%

Complaints filed per year

018362017: 22018: 242019: 282020: 112021: 172022: 272023: 282024: 362025: 252026: 21 (partial year)1718192021222324362526
Complaints by the calendar year they were filed. The hatched bar is the current year to date.
YearComplaints
20172
201824
201928
202011
202117
202227
202328
202436
202525
2026 (year to date)21
Filings in 2023 to 2025 ran 1.6x those in 2020 to 2022 (89 against 55).

Recall campaigns

CampaignReportedComponentSummary
18V34000024/05/2018AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULEGeneral 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
18V57600030/08/2018SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPERGeneral 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
18V35800031/05/2018FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMPGeneral 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
20V66800029/10/2020POWER TRAIN:AUTOMATIC TRANSMISSIONGeneral 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
17V51600022/08/2017POWER TRAIN:DRIVELINE:DRIVESHAFTGeneral 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.

Other Gmc Terrain model years

Severity index for every other model year on file. Compare all 15 years side by side.

Source. NHTSA public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-09-03. Complaints are unverified consumer reports. Totals vary with units sold and years on the road. Not affiliated with NHTSA or any manufacturer.