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havac control cab 379 2003

Discussion in 'Trucks [ Eighteen Wheelers ]' started by hmtruk, Apr 24, 2011.

  1. Apr 24, 2011 #1
    hmtruk

    hmtruk Light Load Member

    123
    49
    Jun 7, 2009
    big lake ,mn
    0
    anyone have an idea why i can't get the controll to change were the air comes out from and why i can't get the air to get hot. on the cab controls for a 2003 379. is there a relay some were that i can't find? both stoped at same time time. sleeper works fine. thanks
     
    hmtruk, Apr 24, 2011
    hmtruk, Apr 24, 2011
    #1
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  3. Apr 24, 2011 #2
    Maxidyne

    Maxidyne Bobtail Member

    28
    2
    Feb 20, 2010
    Portersville PA
    0
    The heater controls on a Pete are controlled by electric motors in behind the dash down towards the right side of the cab. Take the dash apart and look down there with a light and move the controls and if they are not moving it could be the motor that controls the blend doors is burned out. That's where I would start.
     
    Maxidyne, Apr 24, 2011
    Maxidyne, Apr 24, 2011
    #2
  4. Apr 24, 2011 #3
    hmtruk

    hmtruk Light Load Member

    123
    49
    Jun 7, 2009
    big lake ,mn
    0
    thanks i will go tear it apart again and see if i can find them
     
    hmtruk, Apr 24, 2011
    hmtruk, Apr 24, 2011
    #3
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