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2004 2500hd silverado drivers side dual heat blows only cold air but passenger side works fine. has always made odd noises under dash toward drivers side.

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6ya6ya
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Posted on Jan 02, 2017

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jagjeffery
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SOURCE: 2004 Chevy Silverado AC is blowing warm air on passenger side.

You have dual zones that are controlled by temperature actuators the passenger side has lost its memory or has gone bad you can put it in self programming by disconnecting the battery for ten minutes then hook it back up start the truck turn the temperature control on but do not touch any other controls let it go thru the self programming for about 6 to 7 minutes then select your temperature you want if it still does not work properly you may have a bad actuator or a bad connection at the actuator

Posted on Jun 03, 2009

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Molson02536
  • 3854 Answers

SOURCE: 2004 Dodge Ram 2500 air conditioning

It sounds like your electronic vent actuator has gone bad, it's common to go bad and may need to be replaced. There are tinny gears that wear out and the vent actuator stops working. You can try this, turn the radio off first so you don't have to enter the reset code to activate your radio. Disconnect the battery for 30 seconds and reconnect it, if the actuator has lost it's base line and stuck in the open heat position, this will reset it, just make sure the setting is to cold and off before disconnecting and reconnecting the battery. If this does not work, then it's a bad actuator and Auto Zone should have the part you need and will have the step by step instructions for you to the job you self, I believe the dealer is a $415,00 repair cost for this. Good luck and keep me posted. 

Posted on Jun 22, 2009

  • 54 Answers

SOURCE: 2004 chevy tahoe, dual climate control, blowing different temps

Its more then likely the temp door broken or temp door motor broken/stuck. There is 2-3 of these motors under the dash on the side of the evap/heater core box. Some require extensive labor to replace, good luck

Posted on Jul 29, 2009

Auto Master
  • 139 Answers

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Posted on Aug 28, 2009

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  • 9 Answers

SOURCE: one side air blows cold one side blows hot

GM has a known problem with the electric actuators that operate the blend and temperature doors in the HVAC system. There are 4 or 5 of these in the typical system. Any can start sticking or binding and cause this problem. Sometimes they can be cleaned, or they might need to be replaced. Sometimes resetting the HVAC system controller by disconnecting the battery for 10 minutes, then reconnecting it, will correct the problem.

Posted on Sep 15, 2009

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2 Answers

2004 2500 6.0 Silverado ac blows HOT on alternate sides of vehicle while in Auto A/C mode.


Douglass, Your A/C may have lost it's programming, blend door actuator could be faulty or A/C could be low on refrigerant. You may have to take in and have a good Tech. diagnose and estimate repair.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Jul 26, 2016 | 2004 Chevrolet Silverado 2500HD

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Passenger side heat doesn't work in my 2007 Dodge Grand Caravan. There is no heat, only cold air, coming from the dash, floor, & defrost vents. There are dual temp controls for the driver &...


I really can't be sure off hand, but what you wrote looks like the control valves are sticking(these flaps allow air to go different directions at the vents). its located at the heater core(towards the left side of the heater core) under the plastic just under the dash. you can manually move them, encase they are stuck, they do stick sometimes. while checking the vent doors, make sure your vacuum lines are connected. also check to make sure your vent hoses are tight. I hope this helps

Jan 11, 2011 | 2007 Dodge Grand Caravan SXT Minivan

1 Answer

No heat of drivers side blows cold air while passengers side works blows hot air just fine


Replace the door blend actuator behind glove box, approx $150 for part, Everyone I know with dual control on the silverado's have this problem.

Dec 27, 2010 | 2004 GMC Sierra

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2007 Chevy Silverado dual climate control, even if passenger side is not on it blows cold air on passenger side and hot on driver side when in heat mode, also noticed cold air on driver side when A/C is on...


Just had this happen today to my 2007 silverado heat on the right side cold air on the left side. After engine was off 15 minutes and restarted heat was on both sides. I'm guessing a relay failed to open door to allow the heat to flow thus blowing cold air.will monitor diligently for a while.

Oct 20, 2010 | 2007 Chevrolet Silverado Classic SS New...

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Heater only works on passenger side.


there is a motor actuator that moves these doors for hot and cold, two separate ones for either side. the motor unit for drivers side is no good and needs new one. replace this and all will be good.

Oct 01, 2009 | 2004 Chevrolet Silverado

1 Answer

Driver side heat blows cool air passenger side blows hot air


Hello. The side that is not operating properly has a bad temp door actuator located up under the dash. I am assuming this vehicle has driver/passenger(dual)climate control heat and cold settings. This is a very common problem on these vehicles. Hope you find this information useful!

Sep 17, 2009 | 2004 Chevrolet Monte Carlo

1 Answer

When turning the heat on cold air blows from the drivers side


the vent hose behind the dash slipped off of the plastic housing.

Aug 25, 2009 | 2004 Chrysler Pacifica

1 Answer

2006 malibu air conditioner blows warm air on driver's side and cold air on passenger's side.


1. If it worked fine recently, I would suspect low r134a charge. 2. If you have dual zone heating/cooling, your mode motor may be out on the driver's side. Switch the temp up an down slowly and check under the dash for the actuators to move. If one side moves but the other does not, you have found your problem.

Jul 14, 2009 | 2000 Mitsubishi Eclipse

1 Answer

A/C and Heat Driver Side Intermittent Problem


You will need to replace your driver side temp actuator. It is most likely sticking or over travelling. It is located under the dash directly below the a/c control head. It is bolted to the a/c box upside down with two small bolts. Let me know if i can help more.

Dec 15, 2008 | 2004 Chevrolet Silverado

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