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  1. #1

    Default blowing only hot air from drivers side

    got a 05 silveradeo and start it up it blows cold when in the cold position, then it turns to hot when in cold position and air condition is on, passenager side is ok, turn off the truck and its ok for a few minutes then it blows hot again. is it a thermostat or something else.

  2. #2


    Welcome, mine is doing about the same thing. Only it will blow as normal for awhile, then very hot air comes out all the vents. I divert it to the "defrost" until I can stop and restart the truck. Once restarted, it may be good for two or three days. Hard to trouble shoot a problem that comes and goes.

    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

  3. #3


    sounds like the blend door motor has gone bad. this is a common issue....mike
    Michael Collins
    1993 4X4 Suburban
    many other toys as well

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