NHTSA Complaint #11703711 — 2021 GMC SIERRA 2500 POWER TRAIN

Complaint Details

ODI Number	11703711
Vehicle	2021 GMC SIERRA 2500
Component	POWER TRAIN
Date of Incident	November 30, 2025
Date Filed	December 8, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MI

Consumer Description

Pulling into a driveway and the truck made a loud clunk and the check engine light, traction control light, and a reduced engine power light came on and the truck came to an abrupt stop. When the gear shift was put into reverse or any forward gear the truck would rev up without touching the gas pedal. The left rear wheel locked up. After paying over $700 in tow bills to get the truck towed to our house and then to the dealer we were told that the transmission had a catastrophic internal failure. This truck only has 82,000 miles on it and is a 2021!

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