Exterior lightingPart report
2020 GMC Terrain Exterior lighting Problems
- Complaints
- 1about this part
- Share
- 1%of 198 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the exterior lighting of the 2020 GMC Terrain, 1% of the 198 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Related service bulletins
- 11014170Jan 27, 2025This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
- 11000550May 3, 2024This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
Exterior lighting: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 1 | 1% |
| 2019 | 5 | 3% |
| 2018 | 1 | 0% |
| 2017 | 7 | 5% |
| 2016 | 10 | 7% |
| 2015 | 24 | 8% |
| 2014 | 17 | 6% |
| 2013 | 10 | 3% |
| 2012 | 10 | 3% |
| 2011 | 7 | 2% |
| 2010 | 8 | 3% |
Other parts of the 2020 GMC Terrain
Brakes
73 complaintsEngine
58 complaintsOther or unknown
36 complaintsFuel system
31 complaintsTransmission and drivetrain
28 complaintsElectrical system
27 complaintsVehicle speed control
11 complaintsForward collision avoidance
8 complaintsBack-over prevention (rear camera)
6 complaintsBody and structure
5 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsAir bags
3 complaints
73 complaintsEngine
58 complaintsOther or unknown
36 complaintsFuel system
31 complaintsTransmission and drivetrain
28 complaintsElectrical system
27 complaintsVehicle speed control
11 complaintsForward collision avoidance
8 complaintsBack-over prevention (rear camera)
6 complaintsBody and structure
5 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsAir bags
3 complaints
← All problems reported for the 2020 GMC Terrain
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology