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Didnt know what one did what thanks for clearing that up. The black one is the one that moves it from defrost to vents? And can that be replaced with the dash in ?
The ac blows out the defrost when the selector is on vent. If I turn it off and let the truck idle and turn the blower off then turn the selector back to vent it works sometimes. Not all the time. Someone is replacing my heatercore today I wanted to get it fixed while they was in there but its not going to happen .
The vacuum system seems to be working so what else could it be. Someone is working on my truck as I have no time to. I wanted him to have everything he needed to fix it while he was in there. I need the truck I cant have it down for days wating on parts. If its wasting your time dont answer.
Last edited by bigdog0u81; 10-02-2018 at 08:14 PM.
I don't think I have ever seen a vacuum actuator fail...... Vacuum lines, on the other hand, yeah, all the time. Possibly vacuum leak at control head as well.