2017 GMC YUKON Complaints

The rear break lights malfunctioned and will quite working periodically there has been no inspection from a dealership at this moment and driving at night time puts me and my family at risk due to the fact that I could be rear ended and cause a major accident and my vehicle has no warning light or service light for this problem.

Tail lights do not work when I press the brakes. I have been warned multiple times by drivers.

Both the passenger and driver side tail lamps have failed and the assembly had to be replaced.

Just driving along yesterday in my Yukon, and when I stopped another driver pulled up to me and informed me my right rear brake light is not working. Upon further investigation, it comes in and out (sometimes it works sometimes it does not). I had this same issue with my 2015 Yukon, I would have thought GM would have this fixed by now, very expensive fix on my 2015, assuming it’s the same cost or close. Very dangerous to have a brake light out and reduce another drivers reaction time to stop and prevent a rear end collision. Furthermore the vehicle has no indication that a light or bulb is out, a lot of vehicles have that programming, surprisingly this does not.

The contact owns a 2017 GMC Yukon. The contact stated that while stopped at a stop sign, the brake pedal was depressed however, the passenger’s side rear taillight failed to illuminate. The vehicle was not taken to a dealer or independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 53,570.

Adaptive cruise control system is not properly designed to recognize vehicles that are adjacent to the traveling lane and not directly in front of the vehicle. When traveling on the interstate with adaptive cruise engaged, we came around a bend in the road approaching an entrance ramp. There was a slow moving vehicle on the entrance ramp which was apparently identified by the adaptive cruise system as being in front of our vehicle in the same lane. The adaptive cruise caused our vehicle to brake violently while still in the bend in the road, which in turn caused us to swerve into the next lane where there was a car traveling adjacent, but just behind us. This was a very unexpected series of events, and could have resulted in catastrophic consequences had the adjacent car been any closer at the time. This is a major flaw in the adaptive cruise system. And it is compounded by the fact that the adaptive cruise system cannot be switched over to a manually controlled more traditional cruise system. This is a severe design flaw with the GMC Yukon. Some of this could be remedied by issuing a firmware update that allows the driver to disengage the adaptive cruise and switch to a more traditional cruise control method. But GMC has no interest in providing this update, even with multiple message board threads talking about the dangers of the adaptive cruise control.

Taillights and Brake light LEDs go out unexpectedly or work intermittently creating a safety hazard that drivers behind the Yukon are unable to see your taillights at night or when your braking causing Potential rear end collisions. For this common problem GM recalled the taillights of 2015-16 models, but the 2017+ models that still have the same exact taillights with the same issue but has not been recalled yet. Costing owners out of warranty $800 per taillight assembly. Please look into this safety issue.

The left rear tail light has gone out. There is no user replaceable bulb and this is a sealed unit. The deal has quoted almost $800 to replace. I feel a sealed unit should not fail prematurely and should last the entirety of the life of the vehicle. Had it been user serviceable, this would be a simple repair/fix.

Brake light on the passenger side has failed and non operational. I have researched this and found it is way to common to not be a manufacturer design issue.

LED taillights have both gone out. One was replaced by a "service bulliten" and it didn't cost us. The other recently went out at approx 80k miles. These are supposed to last the life of the vehicle. Replacement cost is $750. After doing research, there is a recall for 2015-2016 GMC Yukon taillights that are the exact same product. I contacted GMC and they refuse to replace the known defect part. This is going to cause someone to get seriously hurt. They know the part is defective or they wouldn't have had a recall on the 2015-2016 models.