2018 GMC Sierra 1500 service brakes problems
40 owner complaints filed with NHTSA name the service brakes on the 2018 GMC Sierra 1500 — 13% of all complaints for this model year.
What owners report
“There was a mass recall on 2018 GMC Sierras to due to a faulty break pump vaccum. We are experiencing the same problems but for some reason were not included in the recall. We were told to reach out on here as others have to see what can be done as this is a saftety hazard.”
filed Aug 26, 2026
“Incident description: On three occasion I have had the same catastrophic Engine failure putting myself and my family along with the general public in harms way. Starting March of 2022 while driving at approximately 60 MPH on the West Shore Expressway my truck experienced a sudden and total loss of…”
filed Jun 2, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Output of the mechanical vacuum pump can decrease over time, decreasing the amount of…Campaign 20V603000 · Oct 1, 2020
- 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 | 2% |
| 2025 Sierra 1500 | 6 | 5% |
| 2024 Sierra 1500 | 10 | 3% |
| 2023 Sierra 1500 | 14 | 3% |
| 2022 Sierra 1500 | 28 | 5% |
| 2021 Sierra 1500 | 23 | 4% |
| 2020 Sierra 1500 | 49 | 11% |
| 2019 Sierra 1500 | 107 | 17% |
| 2017 Sierra 1500 | 100 | 28% |
| 2016 Sierra 1500 | 100 | 29% |
| 2015 Sierra 1500 | 219 | 31% |
| 2014 Sierra 1500 | 139 | 19% |
Other reported problem areas on the 2018 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.