NHTSA Complaint #11709159 — 2021 GMC SIERRA 2500 EXTERIOR LIGHTING

Complaint Details

ODI Number	11709159
Vehicle	2021 GMC SIERRA 2500
Component	EXTERIOR LIGHTING
Date of Incident	October 1, 2025
Date Filed	January 6, 2026
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	IL

Consumer Description

My right headlamp/ turn signal assembly began flashing at random intervals. The high beam would come on and off randomly. The entire assembly would randomly flash along with the turn signal. The headlamp would go on and off randomly. This included switching between setting. High beam, low beam, daytime running light, and completely off with no warning. This causes blinding conditions for oncoming drivers, loss of visibility for driver, and loss of visibility during inclement weather due to high beam coming on and off, then entire unit turning off. As of right now, the vehicle is undrivable due to incorrect lighting, and flashing lights.

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