NHTSA Complaint #11705372 — 2020 GMC TERRAIN

SERVICE BRAKES issue reported to NHTSA

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Complaint Details

ODI Number	11705372
Vehicle	2020 GMC TERRAIN
Component	SERVICE BRAKES
Date of Incident	December 14, 2025
Date Filed	December 16, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	CT

Consumer Description

Since August 2024, my brake booster has gone a total of five times each time with the notification on the dash service brake assist. And it just went again as of two days ago. I’ve brought it to Firestone where they have replaced it each time with a warranty on the part. I called them yesterday to tell them that it went again and they refused to fix it telling me that they got the part from the dealership and that I would have to take it there so the dealership would have to figure out what’s wrong with it as to why the car is “chewing up” the part. I have young kids and this part has gone five times.

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