NHTSA Complaint #11644825 — 2021 GMC SIERRA 1500

ELECTRICAL SYSTEM issue reported to NHTSA

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Complaint Details

ODI Number	11644825
Vehicle	2021 GMC SIERRA 1500
Component	ELECTRICAL SYSTEM
Date of Incident	December 10, 2024
Date Filed	February 25, 2025
Mileage	60,129 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	ID

Consumer Description

The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the transmission slammed into gear and the rear wheels locked up. In addition, the vehicle decelerated independently. The vehicle was driven to the shoulder of the road and turned off. The vehicle was restarted, and the contact noticed that the vehicle was independently reset. The vehicle was taken to the dealer where it was diagnosed with a failed wiring harness. The contact was informed that the wiring harness needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 60,129.

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