2015 GMC Yukon Denali XL Exterior lighting Problems
- Complaints
- 36about this part
- Share
- 55%of 65 total for the year
- Median mileage
- 60,700miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 36 complaints about the exterior lighting of the 2015 GMC Yukon Denali XL, 55% of the 65 complaints for this model year. Where a mileage was given, the median is 60,700 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Tail light no longer working. Safety hazard. It started flashing intermittently and smelling funny now it won't work at all. This will cause an accident and of course it's not under warranty as I'm at 60k but Gmc will do nothing for it even though this is a widely known issue. I contacted them and they will do nothing!”
NHTSA complaint #11121900, filed 2018-08, 58,000 miles“The brake lights in this vehicle are faulty. My driver side went out in july and in the same month my passenger side went out. The bulbs are not burned out and it has to do with the wiring. Gmc will not cover the second light or provide cost assistance because I am out of warranty due to miles.”
NHTSA complaint #11023737, filed 2017-09, 39,000 miles“We have had both our taillights fail. The blinkers still function but because they are LED they say they must replace the whole unit. Each side cost $672. That is outrageous for a taillight. There needs to be a way to replace each piece.”
NHTSA complaint #11216937, filed 2019-05, 53,000 miles“'takata recall' we just purchased our 2015 yukon dinali xl december 20, 2018 and have had nothing but problems with brake light ( while in motion ) on driver-side working intermittently, so we replaced both taillights with brand new ($700) enclosed rear light assembly and now we are having an issue with driver side once again. I'm very proud to buy american made products but after seeing how many Gmc monthly complaints with this same issue, you would think that GM would stand behind their product. …”
NHTSA complaint #11173848, filed 2019-02, 99,000 miles“Vehicle has under 45,000 miles and both headlights need to be replaced due to malfunctioning LED's from water intrusion. This happens after washing my car and now it will not pass state inspection due to driver side daytime LED not turning on, and passenger side drl not turning off. I can not get this fixed because the passenger side light is on backorder, yet my local dealer said this isn't a known problem. Take a look on the internet and it's clearly a manufacturing issue (hence backordered headlights)”
NHTSA complaint #11210566, filed 2019-05, 44,500 milesRelated service bulletins
- 11014170Jan 27, 2025This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
- 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
Other parts of the 2015 GMC Yukon Denali XL
16 complaintsTransmission and drivetrain
9 complaintsOther or unknown
7 complaintsSuspension
5 complaintsEngine
4 complaintsSteering
3 complaintsVehicle speed control
3 complaintsBrakes
2 complaintsFuel system
2 complaintsBody and structure
2 complaintsWheels
2 complaintsElectronic stability control
1 complaints
← All problems reported for the 2015 GMC Yukon Denali XL
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