2018 GMC Yukon XL service brakes problems
10 owner complaints filed with NHTSA name the service brakes on the 2018 GMC Yukon XL — 19% of all complaints for this model year.
What owners report
“The back hatch would not open while the car was on and in park. Upon reaching in without being in the car, we turned it off, and it engaged reverse on its own, causing it to reverse immediately almost causing terminal harm to myself and my family. It careened into the woods with us unable to stop…”
filed Apr 18, 2026
“After pressing the brake pedal 2 or 3 times the pedal becomes very hard and it is extremely hard to stop the vehicle. All new brake pads and rotors. The brake pedal is loosing vacuum.”
filed Mar 23, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes problems in other Yukon XL years
| Year | Reports | Share |
|---|---|---|
| 2025 Yukon XL | 5 | 23% |
| 2024 Yukon XL | 1 | 2% |
| 2023 Yukon XL | 8 | 4% |
| 2022 Yukon XL | 3 | 2% |
| 2021 Yukon XL | 6 | 3% |
| 2020 Yukon XL | 3 | 7% |
| 2019 Yukon XL | 4 | 6% |
| 2017 Yukon XL | 22 | 15% |
| 2016 Yukon XL | 40 | 20% |
| 2015 Yukon XL | 62 | 20% |
| 2013 Yukon XL | 1 | 5% |
| 2008 Yukon XL | 1 | 1% |
Other reported problem areas on the 2018 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.