2018 GMC Sierra 3500 Exterior lighting Problems
- Complaints
- 2about this part
- Share
- 14%of 14 total for the year
- Median mileage
- 528miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the exterior lighting of the 2018 GMC Sierra 3500, 14% of the 14 complaints for this model year. Where a mileage was given, the median is 528 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Hid headlights on my truck flicker significantly, and dim and brighten, while driving vehicle on bumpy surfaces. This is brand new truck with 2500 miles on it. I paid extra for the all terrain version. Gmc's official response to me is that it is normal for hid headlights to flicker on/off, and they are refusing to do anything about the issue.”
NHTSA complaint #11081400, filed 2018-03, 1,000 milesRelated 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.
Exterior lighting: other model years
Other parts of the 2018 GMC Sierra 3500
6 complaintsSteering
3 complaintsElectrical system
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsElectronic stability control
1 complaintsEngine
1 complaintsForward collision avoidance
1 complaintsFuel system
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2018 GMC Sierra 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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