Defective wire harness between 2 body control modules, causing alarm to go off repeatedly "Service Trailer Brake System" and also "Stabilitrack" will come on randomly and lock my brakes up and all of the features in my dash. This has been very scary to drive and has brought the vehicle close to collision more than a handful of times now.
2015 GMC Yukon XL electrical problems
58 complaints (19% of all complaints for this car). Typical mileage when it fails: 70,000.
- owner complaints
- 58
- of this car's complaints
- 19%
- typical mileage
- 70,000
- crashes
- 0
- recalls
- 0
Which part fails
Owners did not name a specific part.
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
GMC Yukon XL electrical problems in other years
Related recalls
No recalls on record for this model year.
What 2015 GMC Yukon XL owners say
Most recent owner complaints, unedited.
I keep getting a warning on my display on dash about my trailer brake system is not working. Also my temperature gauge stops working and I have to take off negative cable on battery to reset it. Temperature control sensor has been replaced but the problem still continues to happen.
Trailer service alert
My car is giving me all kinds of warnings, parking assist off, rear back up, trailer brake, the radio sounds go off, blinker sounds go off, while trying to park power steering locks up, it will die in the middle of a turn. It’s doing everything The 2015 recall was created for. I do not think my car was fixed during the recall period. It is very hazardous.
My vehicle Has a Service Trailer Brake System notification in my dash that dings as well. It does it on cold mornings with no trailer attached. I don’t trailer often.
Trailer assist error. Brakes not working. Ac compressors been replaced and the fan runs after the vehicles off and ac only blows warm air
Both tail lights work intermittently. Short in wiring ?
My "Service Trailer Brake System" messages comes on periodically for days at a time with and without my trailer. The loud chime rings consistently for the duration of the drive. It makes driving unbearable. When connecting my trailer to it, the brakes do not seem to function correctly when towing. This is very dangerous. I found out that a lot of my fellow GMC SUV drivers have the same problem.
The contact owns a 2015 GMC Yukon. The contact stated that while operating the vehicle, the power steering malfunctioned causing the steering wheel to become very difficult to turn in either direction. The contact indicated that recently when the failure occurred the vehicle also shut off nearly causing a crash. The vehicle was taken to the local dealer who diagnosed that the battery cables needed to be replaced. The vehicle was not yet repaired. The contact indicated that the vehicle was previously serviced under the federal safety agency Campaign Number: 18V586000 (Steering) however, the failure recurred intermittently. The manufacturer was notified of the failure. The failure mileage was 75,000.
Driver side brake lights don't work again. This will be the 3rd time that I know of that this piece of equipment has been changed out.
Questions about the 2015 GMC Yukon XL electrical
Does the 2015 GMC Yukon XL have electrical problems?
Owners have filed 58 complaints about the electrical of the 2015 GMC Yukon XL, 19% of all its complaints.
At what mileage do 2015 GMC Yukon XL electrical problems start?
The typical (median) mileage in owner complaints is 70,000 miles.
Was there a recall on the 2015 GMC Yukon XL electrical?
There is no recall for this problem on this model year.
What year does the GMC Yukon XL have the most electrical problems?
The GMC Yukon XL model years with the most electrical complaints are 2015 (58 complaints), 2003 (38 complaints) and 2023 (36 complaints).
Other 2015 GMC Yukon XL problems
Lights 140Brakes 64Transmission 35Engine 28Body 12Steering 11Fuel system 8Driver assistance 6Suspension 5Acceleration 3Tires 3Wheels 3Visibility 2Airbags 1Seats 1
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