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Exterior lightingPart report

2018 GMC Terrain Exterior lighting Problems

Complaints
1about this part
Share
0%of 226 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 2018 GMC Terrain, 0% of the 226 complaints for this model year.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Related service bulletins

Exterior lighting: other model years

YearComplaintsShare of year
202011%
201953%
201810%
201775%
2016107%
2015248%
2014176%
2013103%
2012103%
201172%
201083%

Other parts of the 2018 GMC Terrain

Brakes
83 complaints
Engine
55 complaints
Transmission and drivetrain
42 complaints
Other or unknown
36 complaints
Electrical system
35 complaints
Fuel system
17 complaints
Air bags
14 complaints
Forward collision avoidance
8 complaints
Vehicle speed control
8 complaints
Electronic stability control
7 complaints
Steering
7 complaints
Visibility (wipers, defrost, mirrors)
5 complaints

← All problems reported for the 2018 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