Mechanics

SIERRA 2500 PICKUP DEFROSTER

1993 GMC C2500

70,000 miles, 350 engine

When I switch the heating function to defrost, it sounds like the air is blowing against something in the dash, but very little comes out of the vent. How do I get the air directed to the windshield vent? : Wink:
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Gmcdriver
November 2, 2007.



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