2015 GMC Yukon Denali XL lights problems

Filed Jul 28, 2021 · Lights · 40,000 miles · TN

The contact owns a 2015 GMC Yukon Denali XL. The contact stated that the passenger’s side taillight failed to illuminate intermittently while depressing the brake pedal. Over time, the driver’s side taillight also would fail to illuminate with the brake pedal depressed. The contact then received a warranty notice from the local dealer about the failure however, the contact was informed when speaking to the dealer that due to the mileage on her vehicle, the vehicle no longer qualified under the warranty program. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 40,000.

Filed Jun 26, 2019 · Lights · 32,000 miles · WY

The passenger side taillight started 'going out' right after the warranty expired-meaning, it would work off and on at various times. Then the drivers side taillight has started doing the same thing. This is a known issue with the gmc taillights and yet gmc has yet to recognize any issue. This is a major safety issue for anyone driving these models with failing taillights. This needs to be investigated

Filed Jun 9, 2019 · Electrical, Lights · 65,000 miles · FL

Faulty brake-light and costly fix. Dealership has taillight on back order so a replacement isnt even available. Dealership wants $675 just for the part that cant even be ordered. Dangerous to drive the vehicle with no solution available.

Filed Jun 8, 2019 · Electrical, Lights · 67,500 miles · MI

Tail lights intermittently go out without notice. This can happen while driving or stationary

Filed May 30, 2019 · Lights · 53,000 miles · NM

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.

Filed May 29, 2019 · Lights · 44,500 miles · VA

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)

Filed May 23, 2019 · Lights · 72,000 miles · NC

Both rear light assemblies have had issues. Drivers side was first, brake light stopped working. Replaced under warranty. Passenger side brake light and parking light have now stopped working, just out of warranty. Problem comes and goes depending on temperature. I would think this would be considered a safety issue and be the subject of a recall since it is wide spread.

Filed May 9, 2019 · Lights · 120,000 miles · KS

Driver's side, rear tail light failed to light when parked, or when depressing the brake pedal. Dealership quoted just under $800 to replace. Had light replaced, and the same thing is happening again. Dealer states that "lights go out sometimes."

Filed Apr 19, 2019 · Lights · 65,000 miles · TX

Both rear tail lights have gone out.

Filed Mar 31, 2019 · Electrical, Lights · 51,000 miles · NV

Approximately 51,000 miles on vehicle: rear passenger tail light is inop. We were on a trip when we noticed, if you tap the side of it the light would come on for just a second. Led strip for brake light is defective. Replacement cost is about $800 dollars. Lots of complaints and online forums regarding this issue. Gmc really need to resolve this isssue. These rigs cost way to much for that poor quality!