98 Blazer Heater Control
kdave1980
08-23-2009, 08:58 AM
I can turn my adjustment knob it will not change from vent to any other position. Turn knob to floor stays on vent. I can hear a vacuum leak behind control knob changed whole control unit It worked fine for 2 weeks Vacuum leak is back now it wont change from vent again.Only thing I did before this I recharge the AC unit.
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