NHTSA Complaint #11434588 — 2020 GMC SIERRA 1500

SERVICE BRAKES issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11434588
Vehicle	2020 GMC SIERRA 1500
Component	SERVICE BRAKES
Date of Incident	September 18, 2021
Date Filed	September 27, 2021
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	TX

Consumer Description

Two times while on the freeway the service parking brake and engine lights came on and starting braking. Could not drive over 20 mile an hour. Both times taking to dealer the lights where not on and they could not find anything wrong. I even have video of it happening.

Related Complaints for the 2020 GMC SIERRA 1500

Other SERVICE BRAKES Complaints

#11719518 — February 20, 2026 — The brakes suddenly activate and cause the vehicle to rapidly stop with no warning of any kind and without any brakin...

#11699612 — November 15, 2025 — First my torque converter went out, no warning lights only shaking wehn shifting, I got it replaced already it cost m...

#11690818 — October 1, 2025 — On Monday, [XXX], at about 1730 hours was traveling Southbound at 45mph on [XXX] approaching the [XXX] intersection...

#11682879 — August 25, 2025 — Was driving down the freeway around 65 miles an hour attempted to pass a truck when the steering started wobbling the...

#11681985 — August 20, 2025 — My vehicle displayed numerous brake failure codes and limited my speed to 43mph. When taken into my local GMC dealer ...

Recent Complaints for the 2020 GMC SIERRA 1500

#11719463 — ENGINE — February 20, 2026 — The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, there was a l...

#11719518 — FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING — February 20, 2026 — The brakes suddenly activate and cause the vehicle to rapidly stop with no warning of any kind and without any brakin...

#11719423 — POWER TRAIN — February 20, 2026 — On Friday, January 30, 2026 while driving our 2020 GMC Sierra 1500, we experienced sudden loss of power and the motor...

#11719487 — POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER — February 20, 2026 — The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle u...

#11719037 — ENGINE — February 19, 2026 — I had a complete engine failure that I had to pay out-of-pocket for I really think that this vehicle should’ve been i...