NHTSA Complaint #11676578 — 2021 GMC SIERRA 1500

VISIBILITY/WIPER issue reported to NHTSA

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Complaint Details

ODI Number	11676578
Vehicle	2021 GMC SIERRA 1500
Component	VISIBILITY/WIPER
Date of Incident	April 1, 2025
Date Filed	July 28, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	OH

Consumer Description

My rear electric window is leaking into my back seat area and the ceiling of the truck has water stains. It is coming from the roof and is leaking in 3 different areas. I am afraid I will now have mold in my car and I can’t have my grandchildren in the car to be safe for them. I had it checked at a local GMC dealer and I had to pay for a leak speacialist to verify and they confirmed the window has a leak. The leak started in April 2025 and has slowly gotten worse. The dealership said I will need to replace my back window to fix the issue and gave me an estimate of $1,100 and said my extended warranty will not cover this issue.

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