NHTSA Complaint #11694350 — 2021 GMC SIERRA 1500

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11694350
Vehicle	2021 GMC SIERRA 1500
Component	ENGINE
Date of Incident	August 16, 2024
Date Filed	October 19, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	PA

Consumer Description

This was the first time I had ever experienced the rear differential locking up at highway speeds in my truck. It was probably the day after I bought the truck. I was going down route one southbound going probably around 60 miles an hour and the wheels locked up and the vehicle felt like it was gonna come to a screeching hole. It felt like I hit something And then the wheels unlocked and it allowed me to keep driving. I thought that I might have hit the cruise control button on the steering wheel by accident and chopped it up to operator error which now I know is one of the most dangerous recall issues I’ve ever had to experience or indoor. Thank goodness my family was not with me at the time. But these issues continued on for months…

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