2019 GMC Sierra Denali Exterior lighting Problems
- Complaints
- 2about this part
- Share
- 8%of 26 total for the year
- Median mileage
- 6,003miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the exterior lighting of the 2019 GMC Sierra Denali, 8% of the 26 complaints for this model year. Where a mileage was given, the median is 6,003 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.
“The headlights flicker violently when driving at any speed. According to the dealer the issue is normal. It is very distracting to drive at night and likely distracting on coming traffic. The truck now has 13k miles and has gotten worse to the point we don't drive it at night.”
NHTSA complaint #11235230, filed 2019-07, 6 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.
- 10245559Nov 16, 2023This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
- 10236041May 3, 2023This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
Exterior lighting: other model years
Other parts of the 2019 GMC Sierra Denali
8 complaintsSteering
7 complaintsElectrical system
5 complaintsElectronic stability control
5 complaintsOther or unknown
5 complaintsEngine
4 complaintsTransmission and drivetrain
4 complaintsBack-over prevention (rear camera)
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsBody and structure
1 complaintsTires
1 complaints
← All problems reported for the 2019 GMC Sierra Denali
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