Question about 2004 GMC Envoy

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I have a 2004 envoy and my air will not blow through my front vents. The air blows fine through my top, bottom, rear and side vents, why is it not blowing through my front vents?

Posted by julangelgirl on

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Mr BrokRench

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If you recently had a weak battery or replaced a battery the HVAC unit will perform a recalibration of all doors. This causes the door motors to be moved full cycle and the mode door will stick some times. Usually this is the problem. The actuator motor will need to be removed and replaced...sometimes they can be recalibrated, but not often.
Good luck, i hope this helps.

Posted on Jul 19, 2011

  • Ermilo Garduno Feb 21, 2012

    Hi I have an 2004 gmc envoy and I have almost the same problem but I don't know how to take the front panel out to recalibrate or replace the doors

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1 Answer

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