NHTSA Complaint #11667437 — 2021 GMC SIERRA 1500

ENGINE AND ENGINE COOLING issue reported to NHTSA

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Complaint Details

ODI Number	11667437
Vehicle	2021 GMC SIERRA 1500
Component	ENGINE AND ENGINE COOLING
Date of Incident	December 1, 2024
Date Filed	June 17, 2025
Mileage	45,000 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	NC

Consumer Description

The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds, the check engine warning light illuminated, and the engine fan activated and operated at a very high velocity. Additionally, the message "Engine Power Failure" message was displayed, and the vehicle stalled. The vehicle was taken to the local dealer who diagnosed that the engine coolant control valve was faulty and needed to be replaced. The contact was informed that the parts were on backorder and no repairs were performed. The manufacturer was not yet contacted. The failure mileage was 45,000.

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