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1992 GMC vandura vent wont switch from AC to heat
1992 GMC C2500
Need to know how to access vent to manually switch from ac to heat
have the same problem?
Monday, October 31st, 2011 AT 12:52 AM
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.
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Monday, October 31st, 2011 AT 6:47 PM
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