Question about 2004 GMC Sierra

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Hot air only on passanger side vents - 2004 GMC Sierra

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Could be a blend door problem under the dash.

Posted on Dec 11, 2012

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2004 GMC Siera Dual AC, One side works the other doesnt

I coincidentally had the same problem today. Whats the a/c plenum and how can I take care of it?

Posted on Jul 10, 2008

  • 436 Answers

SOURCE: 2004 Yukon. driver side air conditioner not working

you need to change drivers side temp door actuator then disconnect battery for 5 seconds and reconnect after changing the part, turn key on for 60 seconds with touching heater control to allow actuator to program and then it will work.

Posted on Sep 19, 2009

  • 82 Answers

SOURCE: 2002 gmc sierra blows Hot air thru ac vent on

driver temp control door is stuck or motor/coupling for the door is bad - dash has to be taken out to get at a/c unit - i had same problem on buick ultra

Posted on Sep 25, 2009

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I have a 2002 dodge ram quad cab and i haveing problems with the heat , it wants to blow hot air only on passanger side only and driver side is cold


Hi, check the air vent doors make sure they are not broken and the door motor is working, they have a bad problem about breaking . if i can help just re post .
Thanks dodge tec

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It is a door actuator motor that is not working,the dash will have to be removed to replace it.

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Air conditiom blows hot air on passanger side


yur air handler could be bad on that side or if you have dual climate control the control for that side could be bad.

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Im not getting any heat blows cold air. i changed the thermastat and nothing. it was blowing out hot air in the vent setting but nothing now.


need to check your blend air door located behind the dash on the passanger side, if that checks out good then you have a blockage either in your heater core or hoses to/from the heater core.

Jan 17, 2010 | 1999 Ford Taurus

1 Answer

Heating problem driver side blowing hot air passanger side blcold


its likley to be the pipe has been riped off or fell off or its the flaps on the heater box its self not opening,,,have a look under the dash to fine any pipes that are off the heater box,,
anyhow, who cears if the passanger gets cold,,, its the driver who needs to keep warm!!!!
unless its the other half? or worse still its the mother in law!!!! ho ho ho!

Nov 05, 2009 | 1995 Oldsmobile Ninety Eight

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Heater blows hot air on driver side but cold on Passanger side ?


either the heater rad is chocked up and its not hot all over,or its a flap opening problem

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Climate control on passenger side does not work


their is a switch that controls passanger side tempature have you move that

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had the same problem/. it's the ac plenium

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