NHTSA Complaint #11672133 — 2021 GMC SIERRA 1500

POWER TRAIN issue reported to NHTSA

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Complaint Details

ODI Number	11672133
Vehicle	2021 GMC SIERRA 1500
Component	POWER TRAIN
Date of Incident	July 8, 2025
Date Filed	July 9, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	UT

Consumer Description

The coolant control valve is faulty and is on national backorder causing months of my truck sitting in the shop. This is not an isolated issue. GM is claiming it is not covered under warranty, but the part design is clearly a serious issue.

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