Question about 2003 GMC Envoy

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2003 gmc envoy

The air conditonor will not move from the floor area. When you try to put it on the panel or face it stays on the floor or defroster.

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  • keith fleming Feb 27, 2009

    Where is the heater accuator located. It moves the air from the floor to the panel vents coming out of the dash/.

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The BEST method to diagnose this problem is indeed a scan tool which will read any trouble codes AND give you info of the position of the air distribution door motors...

Posted on Mar 09, 2009

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3 Answers

Heater clicking noise in gmc envoy


Do you hear a clicking noise when you turn your truck on? Its probably the actuator. While the defroster was on I removed the fuse locted under the rear driver side seat. I think its 36B. It stopped the clicking noise and my air vents work well now.

Dec 08, 2011 | 2003 GMC Envoy

1 Answer

I have a 2003 GMC Envoy XL when I start the car it makes a ticking noise for about a minute or 2 - coming from rear wheel well then the noise just stops


That is one of the mode control actuators in the rear HVAC unit, it is trying to move the mode door but is meeting resistance. You can access that area by removing several screws and removing the panel.

Aug 05, 2011 | 2003 GMC Envoy

1 Answer

Clicking noise when turn on the a/c and the face vents are not discharging and air flow. the floor and defrost are working.


Blend door in the heater box is either jammed or stripped on the gear to the drive motor.

Jul 22, 2010 | 2002 GMC Envoy

1 Answer

2003 gmc envoy air only blows out of floor and defrost. I hear no air leak and cannot find vacuum lines from engine to firewall. Please help. Air does blow to the rear console.


The blend door(s) actuator is more than likely the problem, this is a common issue with this vehicle. The repair is complex, it involves gaining access to the HVAC housing in the dash. Visit www.trailvoy.com and search on HVAC.

Jul 10, 2010 | 2004 GMC Envoy

1 Answer

Air or heat wont blow middle vents hear clicking in dash


I have NO vents blowing on the dash , shifted from floor to defrost no trouble??? Help...AC or Heat

Jul 10, 2009 | 2003 GMC Envoy

1 Answer

2003 envoy ac blows cold from defrost and floor but will not dash


u have to take your dashboard at the glove compartment to cheack the vacuumpod ot your damper door

Jun 27, 2009 | 2003 GMC Envoy

1 Answer

2006 Envoy SLT air suddenly stopped blowing from vents


the resister block needs changing... oddly enough i'm unsure of what fan you are saying is not working.... if it's the front.. the resister block is located on the duct work under the dash for the air... near the fan... you will see a connector going into the side of the duct work. two screws and the block comes out... should be fairly obvious for the rear one but it will be near the fan.

Apr 16, 2009 | 2006 GMC Envoy

1 Answer

Air Vents 2003 Envoy


I have the same ploblem, I just wonder why this is not a recall yet? the other problem i got is the fuel gauge not working.

Aug 02, 2008 | 2003 GMC Envoy

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