Question about 2004 Chevrolet Silverado 1500 Crew Cab

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My truck heater only works on passanger side. Driver side is cold

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  • 87 Answers

You probably have a bad temp door actuator for the driver side, it will need to have the system rehomed after repair

Posted on Jan 15, 2013

6 Suggested Answers

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Posted on Jan 02, 2017

duster292
  • 19 Answers

SOURCE: A/C Heater problems

the main issue with this is either the thermostat or the climate control switch I do not know if your climate control switch is electronic or manual either way I would start out with the cheapest and go with the thermostat first good luck!

Posted on Nov 22, 2008

  • 36 Answers

SOURCE: No hot Air on Driver side vent. 2004 W/Truck with

Check the actuator ot the pass side blend door for proper operaton. If it does operate remove it and confirm that the door is not broken.

Posted on Nov 03, 2009

  • 462 Answers

SOURCE: Heater issue, driver side of 2004 Chevy Avalanche

1. Place the ignition switch in the off position.
2. Remove the HVAC/ECAS fuse for 10 seconds or more. It's in the under hood fuse box. Put the temp in full cold.
3. Install the fuse.
4. Start the engine. DO NOT TOUCH THE HVAC CONTROLS FOR LESS THAN 45 SECONDS.
5. Have any codes cleared with a scan tool.

Posted on Dec 07, 2009

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alicantecoli
  • 22133 Answers

SOURCE: heater on driver side blows cold air

something wrong with flap operating device ?? would need to get my head under the dash to sort it though because their is so many variables of what could be causing it ,quick fix is to disconnect the operating mechanism and put a elastic band on it till the weather warms up

Posted on Jan 03, 2010

  • 6982 Answers

SOURCE: heater in 2004 avalanche blowing cold on driver side but hot on

Inside the heater box there are doors that are opened and closed by actuators on the outside of the box. Actuators are usually vacuum operated but sometimes can also be electric. They are often on top of the box and very difficult to get to. The problem is someone can tell you an actuator is bad, but you need to verify that by actually locating it and testing it. That, no one on the internet can do for you. Some dashboards need to be completely taken apart to get to some of the controls. (great engineering?)
If you don't have lots of experience working on these, though it is understandably expensive, I recommend you have a good shop do the work for you.
If you want to try it, get a haynes or chilton manual, read it first and then give it a try.

Posted on Feb 17, 2010

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1 Answer

Driver side blowinging cold air. passanger side blows hot and cold air. also a hissing noisand squeeking noise when i crank it after it sits for a day


Sounds about right, but you only have one actuator motor. It is in the center of the dash inside the truck and is attached to the heater box. The actuator motor opens and closes the doors on the heater and air in order to direct the air you want either hot or cold as the heater core is in the bottom of the heater box and the ac evaporator air is coming from the top of the box. The motor may be ok and one of the arms is loose or worn out or the spring is weak and not holding position. Hope this helps.

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1 Answer

Heat is cold when it comes out of the driver side but not passanger side


check temp. blend door actuator its what controls the temp doors to change from hot to cold usually pass. side door breaks on jeep grand cherokee's causing pass. side to be cool,have seen some on drivers side break but not as many

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Heater issue, driver side of 2004 Chevy Avalanche


1. Place the ignition switch in the off position.
2. Remove the HVAC/ECAS fuse for 10 seconds or more. It's in the under hood fuse box. Put the temp in full cold.
3. Install the fuse.
4. Start the engine. DO NOT TOUCH THE HVAC CONTROLS FOR LESS THAN 45 SECONDS.
5. Have any codes cleared with a scan tool.

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1 Answer

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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!

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1 Answer

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you have a bad left temp door actuator. its on the lower left side of the heater box held on by 2 or 3 5.5 mm screws. It will most likely need calibrated after replacement

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

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U will need to replace the pass side air temp control blend door acuator motor.

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Heater problem on 1995 Olda Aurora


Check the passenger side mode door actuator. This is located under the dash on the passenger side. Once you find it watch the rod as you move the temp lever from hot to cold to see if it moves. If it does make sure that the rod is hooked to the door. If it doesn't the actuator is probably bad or the door is jammed.

Nov 24, 2008 | 1995 Oldsmobile 88

1 Answer

A/C Heater problems


the main issue with this is either the thermostat or the climate control switch I do not know if your climate control switch is electronic or manual either way I would start out with the cheapest and go with the thermostat first good luck!

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