NHTSA Complaint #11702097 — 2020 GMC TERRAIN

SERVICE BRAKES issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11702097
Vehicle	2020 GMC TERRAIN
Component	SERVICE BRAKES
Date of Incident	November 28, 2025
Date Filed	November 30, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MI

Consumer Description

While driving on a main road at around 45mph the vacuum pump that supplies brake fluid to the brakes failed. The car was unable to be stopped and had it not been late in the night I could have crashed into other vehicles on the road or hit someone walking. There was not indication prior to the malfunction and was very sudden. This issue has been observed by the dealer as well as multiple other individuals with the same problem for this make and model of car as well as others by the same manufacturer for similar years of manufacturing. This part has also been shown to break into the engine causing complete engine failure due to lack of a shear pin on the vacuum pump.

Related Complaints for the 2020 GMC TERRAIN

Other SERVICE BRAKES Complaints

#11709184 — January 6, 2026 — While driving down the interstate a notice popped up on my dash about the brake assist. When I attempted to slow dow...

#11705372 — December 16, 2025 — Since August 2024, my brake booster has gone a total of five times each time with the notification on the dash servic...

#11702750 — December 3, 2025 — While driving my brakes failed. I was unable to stop my car, my brake pedal became very stiff and I could not stop my...

#11699191 — November 13, 2025 — Vacuum pump went out. It was a recall, previously on older models, but this model needs to

#11698340 — November 8, 2025 — I filed a complaint with NHTSA on November 3, 2025, about my brake system. Here is another one adding more informati...

Recent Complaints for the 2020 GMC TERRAIN

#11716636 — ELECTRICAL SYSTEM — February 9, 2026 — The contact owns a 2020 GMC Terrain. The contact stated that while driving in cold weather at various speeds; moistur...

#11714544 — UNKNOWN OR OTHER — January 30, 2026 — I own a 2020 GMC Terrain with approximately 110,000 miles. While driving in winter, the vehicle suddenly lost cabin h...

#11713540 — ENGINE — January 27, 2026 — I noticed a sticker in driver door stating recall however no evidence. The vehicle will not pull hills, back up on a ...

#11713540 — FUEL/PROPULSION SYSTEM — January 27, 2026 — I noticed a sticker in driver door stating recall however no evidence. The vehicle will not pull hills, back up on a ...

#11713540 — STRUCTURE:BODY — January 27, 2026 — I noticed a sticker in driver door stating recall however no evidence. The vehicle will not pull hills, back up on a ...