2018 GMC Terrain service brakes, hydraulic problems
11 owner complaints filed with NHTSA name the service brakes, hydraulic on the 2018 GMC Terrain — 5% of all complaints for this model year.
What owners report
“The contact owns a 2018 GMC Terrain. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact stated that the brake pedal was abnormally firm. The brake pedal was depressed to the floor, and the…”
filed Aug 3, 2026
“The contact owns a 2018 GMC Terrain Denali. The contact stated while the contact's daughter was driving, the brake pedal was depressed, however the vehicle failed to stop as intended. In addition, the contact stated that the brake pedal was unusually hard when depressed. The vehicle was taken to…”
filed May 12, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Rear brake caliper pistons may have an insufficient coating causing gas pockets to form…Campaign 18V576000 · Aug 30, 2018
Service Brakes, Hydraulic problems in other Terrain years
| Year | Reports | Share |
|---|---|---|
| 2024 Terrain | 1 | 2% |
| 2020 Terrain | 6 | 3% |
| 2019 Terrain | 7 | 4% |
| 2015 Terrain | 1 | 0% |
| 2011 Terrain | 2 | 1% |
Other reported problem areas on the 2018 GMC Terrain
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.