Question about 2004 GMC Sierra

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Air blend door

2004 Gmc Sierra w/dual control heat. one side will blow cold air & the other hot installed new controller. same result air door actuator be the problem ?

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  • Anonymous Mar 12, 2014

    Is there a fuse that controls the blend door actuator

  • Anonymous Mar 18, 2014

    No hot air in 99dodge1500 Think the blend door does it have a vaccum switch

  • Anonymous Mar 22, 2014

    air is only coming out on the floor, it does not come out on defrost or midrange settings.

  • Anonymous Mar 26, 2014

    left side blowes hot air all the time where is the blend door on this gmc

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  • Master
  • 3,113 Answers

Replace the broken actuator.

Posted on Apr 15, 2009

  • Robert McKnight
    Robert McKnight Nov 12, 2013

    Where is the actuator located

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1 Answer

Passenger A/C blowing hot air in a 2004 GMC Sierra SLT.


Usually when one side is hot and the other is cold, and each side is controlled separately, the problem is a blend door not working.
The blend doors are usually controlled by small electric motors.
You might research "blend door" online and see if anything pops up.

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1 Answer

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To correct this problem u will need to replace the air temperature control blend door and the electric blend door actuator inside the dash, contact your local dealer for parts, they are dealer only parts

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