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April 20, 2005 Service bulletin

Headlamps flicker or dim while driving

Chevrolet technical service bulletin 3317A for 2002-2005 Chevrolet Trailblazer, 2002-2005 GMC Envoy and 2002-2004 Oldsmobile Bravada and others.

Bulletin number
3317A
Component
Exterior lighting: headlights
Summary
Headlamps flicker or dim while driving. Tt

Owners of these vehicles have filed 659 complaints in the lights category.

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