2015 GMC Sierra 1500 service brakes problems
219 owner complaints filed with NHTSA name the service brakes on the 2015 GMC Sierra 1500 — 31% of all complaints for this model year.
What owners report
“When backing up, either on a hill or flat surface, the brakes fail to stop the vehicle. There is a pulsing sensation with the brakes due to failure of the vacuum. The brake pedal also becomes impossible to depress. No warning lights appear when this occurs.”
filed Jul 7, 2026
“I had and still have the Brake Assist failure warning light on and having issues with brake pedal effort not working as it should to stop vehicle and also the stability control warning lights., the brakes hardly work at all at low speeds and most of the time don't stop the vehicle almost causing…”
filed Mar 2, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in…Campaign 19V761000 · Oct 24, 2019
- Amount of vacuum created by the vacuum pump may decrease over timeCampaign 19V645000 · Sep 6, 2019
Service Brakes problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 2 | 3% |
| 2025 Sierra 1500 | 3 | 3% |
| 2024 Sierra 1500 | 10 | 3% |
| 2023 Sierra 1500 | 12 | 3% |
| 2022 Sierra 1500 | 27 | 5% |
| 2021 Sierra 1500 | 22 | 4% |
| 2020 Sierra 1500 | 48 | 11% |
| 2019 Sierra 1500 | 107 | 17% |
| 2018 Sierra 1500 | 39 | 13% |
| 2017 Sierra 1500 | 100 | 28% |
| 2016 Sierra 1500 | 100 | 30% |
| 2014 Sierra 1500 | 139 | 19% |
Other reported problem areas on the 2015 GMC Sierra 1500
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.