Question about Air Conditioning and Heat for GMC Envoy

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I have a 2003 envoy. Air works but only blow at defrost and floor.

Air works but only blows at feet and defrost.

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Mode selection door in the plenum is stuck, broken or has no vacuum. You should be able to see it behind the glove box

Posted on May 06, 2013

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Posted on Jan 02, 2017

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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

I have an 2003 Envoy my a/c blowes air through side ,back, floor,


most likely there is a napkin in the intake vent under one of the front seats.check to see if there is something in it,use a wire hanger to pull anything out,this should work.

Jul 16, 2009 | 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

Dash vents will not blow air. Defroster and floor vents blow fine.


Is it a new vehicle? I had a new vehicle that had the same problem. Answer was that the holes weren't punched out of the vent.

May 23, 2009 | 2004 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 diverter only diverts blown air to feet or defroster.


its a hvac mode accuator it controls where the air blows i have the same problem with my envoy waiting on the part in the mail its up under the dash. the part is vin specific so check for the part number with a dealer they told me $103 but i found one online for $57

Jan 06, 2009 | 2006 Chevrolet Trailblazer

1 Answer

Envoy A/C problem connected to Recent Battery Change...


Yes there is a connection with A/C going wacky and the battery disconnected for any reason, due to poor design. Upon re-connection of the battery, our actuators have a good chance of blowing. Pretty common problem, they should have disconnected Fuses #10 and #28 before hooking the battery back up.

Apr 12, 2017 | 2003 GMC Envoy

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