Mechanics

VANDURA VENT WONT SWITCH FROM AC TO HEAT

1992 GMC C2500 • 150,000 miles

Need to know how to access vent to manually switch from ac to heat
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Phestbech
October 31, 2011.



You have vacuum motors to switch these, check for avacuum leak most are under the dash i'm sending a vacuum diagram as that is all we have.


Hmac300
Oct 31, 2011.