Problems owners report
Complaints filed with NHTSA about the 2023 GMC Terrain, by the system named in each complaint. One complaint can name several.
- Fuel/propulsion system16
- Engine15
- Power train8
- Electrical system7
- Unknown or other7
- Fuel system, gasoline6
- Lane departure4
- Vehicle speed control2
- Air bags2
- Forward collision avoidance2
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 1 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
Fatal crashes in the US
From 2020 to 2023, 7 2023 Terrain vehicles were involved in crashes on US public roads in which someone died; 5 people died inside them, and 1 of the vehicles rolled over. This is a count, not a crash rate: it grows with the number of cars on the road.
NHTSA Fatality Analysis Reporting System (FARS), crash years 2020–2023 (public domain)
New York safety inspections
At its first New York inspection the 2023 GMC Terrain failed the safety check 0.33% of the time — 51% less often than the average 2023 passenger car (0.69%). Median odometer at inspection: 12,625 miles.
NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count
Crash-test ratings
NHTSA 5-star results for 2 variants; 2 of 2 rated variants score five stars overall. Rollover risk is the estimated chance of rolling over in a single-vehicle crash.
| Variant | Overall | Rollover risk |
|---|---|---|
| 2023 GMC Terrain SUV AWD | ★★★★★ | 16.4 % |
| 2023 GMC Terrain SUV FWD | ★★★★★ | 18.5 % |
- Electronic stability control
- Standard
- Forward collision warning
- Standard
- Lane departure warning
- Standard
- Best overall rating
- 5 / 5
NHTSA New Car Assessment Program (5-Star Safety Ratings), api.nhtsa.gov · US federal work, public domain
Fuel consumption
Official Canadian test results for 2 variants: combined 9.0–9.2 L/100 km (about 26 mpg US), CO₂ 211–216 g/km.
| Variant | City | Highway | Combined |
|---|---|---|---|
| Terrain · Sport utility vehicle: Small · Regular gasoline | 9.7 | 8.1 | 9.0 |
| Terrain AWD · Sport utility vehicle: Small · Regular gasoline | 9.9 | 8.3 | 9.2 |
Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada
Recalls in Canada
1 Transport Canada recall for the 2023 GMC Terrain.
| 2023279 11 May 2023 | Seats And Restraints Issue: The coating may be too thick on the connection bars for the lower universal anchorage system (UAS) for securing a child or booster seat in the rear seat… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
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, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."
General Motors, LLC (GM) is recalling certain 2023 Chevrolet Equinox and GMC Terrain vehicles equipped with ventilated front passenger seats. The Occupant Classification System may not properly disable the front passenger air bag when there is a small child or child restraint detected in the seat.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What GMC told its dealers about the 2023 GMC Terrain: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 11012006 | This Preliminary information communicates a known concern with the high pressure fuel pump and potential injector contamination. |
| 11011996 | This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative. |
| 11011989 | This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid. |
| 11011904 | This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation. |
| 11011900 | This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue. |
| 11011892 | Service Update - Certain Vehicles may have a condition where the high pressure fuel pump is potentially inoperative. Dealers are to replace the high pressure fuel pump and fuel pump feed pipe. |
| 11011853 | This technical bulletin provides a procedure to correct a customer concern of a High Pitch Whine Noise Coming from Front Instrument Panel (IP) Speakers. |
| 11011805 | This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses. |
| 11011779 | This preliminary information discusses potential for a code C0010.5A to store in the brake controller which appears to be setting falsely or is induced by the customer. |
| 11011709 | This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. |
| 11011694 | This Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct. |
| 11011693 | This Preliminary information communicates how to recover the Image Processing Module. |
| 11011466 | This Preliminary information communicates known concern with cooling fan and the current repair. |
| 11011406 | This Preliminary information communicatesa "Forward Collision System Reduced" message displayed on the DIC when theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert". |
| 11011367 | This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope. |
| 11011225 | This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle. |
| 11011205 | This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules. |
| 11011012 | This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves. |
| 11010724 | This service bulletin provides a procedure to correct radio software concerns. |
| 11010576 | This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC. |
| 11010545 | This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S). |
| 11010495 | This bulletin provides information on Warranty Administration Required Operating Procedures - 8 Points (U.S. Only). |
| 11010493 | This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period. |
| 11010492 | This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories. |
| 11010491 | This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs. |
NHTSA manufacturer communications (public domain)