1992 GMC C2500 Repair Question
Topics covered: Vacuum leak.
Mileage: 150,000 miles.
Mileage: 150,000 miles.
Asked on October 31, 2011
1992 gmc vandura vent wont switch from ac to heat
Need to know how to access vent to manually switch from ac to heat
Asked by phestbechAnswer
Replied on 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.
