Exterior lightingPart report

2018 GMC Sierra Denali Exterior lighting Problems

Complaints: 3about this part
Share: 18%of 17 total for the year
Median mileage: 4,000miles
Trend: Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the exterior lighting of the 2018 GMC Sierra Denali, 18% of the 17 complaints for this model year. Where a mileage was given, the median is 4,000 miles.

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.
10249011Jan 12, 2024This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
10236041May 3, 2023This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.

Exterior lighting: other model years

Year	Complaints	Share of year
2019	2	8%
2018	3	18%
2017	1	7%
2016	2	7%
2014	1	7%
2008	1	6%

Other parts of the 2018 GMC Sierra Denali

Engine
5 complaints Brakes
4 complaints Body and structure
4 complaints Steering
3 complaints Electronic stability control
2 complaints Transmission and drivetrain
2 complaints Other or unknown
1 complaints Suspension
1 complaints Wheels
1 complaints

← All problems reported for the 2018 GMC Sierra Denali

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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