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November 18, 2003 Service bulletin

HVAC mode actuator cam gear alignment is incorrect after replacement

Chevrolet technical service bulletin 01459 for 2003-2004 Chevrolet Trailblazer, 2003-2004 GMC Envoy and 2003 Oldsmobile Bravada and others.

Bulletin number
01459
Component
Visibility: defroster/defogger/HVAC system: windshield: electrical heating element
Summary
Hvac mode actuator cam gear alignment is incorrect after replacement. Tt

Owners of these vehicles have filed 167 complaints in the visibility category.

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