2015 GMC Yukon XL electrical system problems
58 owner complaints filed with NHTSA name the electrical system on the 2015 GMC Yukon XL — 19% of all complaints for this model year.
What owners report
“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…”
filed Oct 4, 2024
“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.”
filed Sep 30, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Yukon XL years
| Year | Reports | Share |
|---|---|---|
| 2026 Yukon XL | 5 | 23% |
| 2025 Yukon XL | 6 | 27% |
| 2024 Yukon XL | 12 | 20% |
| 2023 Yukon XL | 33 | 17% |
| 2022 Yukon XL | 19 | 13% |
| 2021 Yukon XL | 12 | 6% |
| 2020 Yukon XL | 2 | 4% |
| 2019 Yukon XL | 6 | 9% |
| 2018 Yukon XL | 4 | 8% |
| 2017 Yukon XL | 31 | 22% |
| 2016 Yukon XL | 30 | 15% |
| 2011 Yukon XL | 2 | 4% |
Other reported problem areas on the 2015 GMC Yukon XL
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.