No heat is blowing out just cool air when switched onto heat in a '98 Chevrolet z-71 truck. Why after I had the heads redone since I have gotten my truck back from the mechanics I turn to heat on the control and no heat works just cool air. I took it back and they said it may be an actuator. Can someone please explain how to fix this? I learned it's in the dash or the dash would have to be recovered that was all they said.
By todd Wyndham
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