Question about 1998 Pontiac Grand Prix
My, 1998 pontiac grand prix se heat and a/c works fine, but the top dash board (defrost vents), mid-level vents, and lower vent will not work independently.how to fix? PLEASE HELP ITS COLD-ty.rogers
Can you hear anything moving in heater when you move the switch to other settings? If not then the blend door is not moving to redirect air flow. There is three things that could cause this, 1 the control switch is bad or 2 the blend door acturator is bad, and 3 linkage for the door has come unhooked or broke, most likely its #1 or #2. First you need to find the blend door acturator and test light the wires to it, there should be 3, 1 hot with key on 2 only hot with switch moved, and 3 ground. If you got power from wires than the acturator motor is bad, if no power switch is bad.
Posted on Feb 04, 2009
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Posted on Jan 02, 2017
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