2020 GMC Terrain Service Brakes Problems
Owners have filed 65 complaints with NHTSA about service brakes problems on the 2020 GMC Terrain, 33% of all complaints for this model year. Half of the reports with a mileage happened before 34,415 miles. The words owners use most often: “vacuum pump” (54% of reports).
- 65service brakes complaints
- 34,415median miles at failure
- 5mention a crash
- 1mention an injury
- 0related recalls
- 37%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Vacuum pump: mentioned in 35 of 65 complaints (54%)
- Service brake: mentioned in 12 of 65 complaints (18%)
- Engine power: mentioned in 9 of 65 complaints (14%)
- Hard press: mentioned in 7 of 65 complaints (11%)
At what mileage do service brakes problems happen?
Based on 4 complaints that reported the odometer reading.
How serious are the reports?
Of 65 complaints, 5 mention a crash, 1 an injury.
GMC Terrain service brakes complaints by model year
| Model year | Service Brakes complaints | Share of that year | Median miles |
|---|---|---|---|
| 2026 Terrain | 4 | 12% | — |
| 2025 Terrain | 2 | 15% | — |
| 2024 Terrain | 2 | 4% | — |
| 2022 Terrain | 1 | 2% | — |
| 2021 Terrain | 8 | 22% | 78,843 |
| 2020 Terrain | 65 | 33% | 34,415 |
| 2019 Terrain | 65 | 35% | 40,000 |
| 2018 Terrain | 70 | 31% | 34,000 |
| 2017 Terrain | 2 | 1% | 50,000 |
| 2016 Terrain | 5 | 3% | 32,000 |
| 2015 Terrain | 8 | 3% | 43,200 |
| 2014 Terrain | 9 | 3% | 41,450 |
| 2013 Terrain | 7 | 2% | 44,198 |
| 2012 Terrain | 5 | 1% | 59,000 |
| 2011 Terrain | 5 | 1% | 77,264 |
| 2010 Terrain | 8 | 3% | 123,462 |
When owners reported it
Related recalls (0)
No safety recall lists service brakes for the 2020 GMC Terrain. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
While driving at the speed limit the vacuum pump failed on my 2020 GMC Terrain. This failure led to me enter an intersection with heavy cross traffic, nearly striking g several vehicles. This is the 3rd time I have had to replace this pump in 2 years. The pump explodes sending chards of metal into…
While driving my 2020 GMC Terrain, I experienced a sudden loss of normal braking assistance. I had been traveling on the highway and exited onto a main road. As I approached a red traffic light at approximately 50 mph and attempted to brake, the vehicle would not stop normally. I was unable to stop…
The brake suddenly became impossible to depress more than 3/4 of an inch. Almost unable to stop nearly hitting another vehicle. The dashboard then lit up with a "service brake system" warning. Luckily was only a few minutes from home brought it home and began the search for the issue. The brake…
Frequently asked questions
Do all 2020 GMC Terrains have service brakes problems?
No. NHTSA has 65 owner complaints about service brakes for the 2020 GMC Terrain (33% of the 197 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2020 GMC Terrain service brakes?
No recall currently lists service brakes for this vehicle.
At what mileage do service brakes problems start?
The median reported mileage is 34,415 miles: half of the reports with a mileage came before that.
What do owners say about service brakes problems on the 2020 GMC Terrain?
The most frequent phrase is “vacuum pump”, in 35 of 65 complaints, followed by “service brake” (12).
Other 2020 GMC Terrain problems
- Engine problems (58)
See all 2020 GMC Terrain problems or service brakes problems across all Terrain years.