DaniGirl

I have a 2004 Monte Carlo. The air control is set to heat but only passangers side blows hot air. My question is, "Where is the blend door actuator, and how to replace it?" And only becuase I called several repair shops and some say the dash has to be removed and others say it does not, does the dash have to be removed to repair?

Thanks

shawnvw

Removal Procedure

1. Remove the left instrument panel (I/P) insulator.
2. Remove the knee bolster bracket bracket.
3. Disconnect the electrical connector from the left air temperature actuator.
4. Remove the mounting screws from the left air temperature actuator.
   
   
5. Remove the left air temperature actuator.

Actuator Recalibration
Calibration Procedure

Use the following steps to perform the calibration update:

1. Turn OFF the ignition.
2. Remove the battery positive voltage circuit fuse of the HVAC Control Module.Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.
3. Wait 60 seconds.
4. Install the fuse.
5. Wait 60 seconds before moving the HVAC controls.

DaniGirl

Thanks so much for the quick reply.

shawnvw

you're welcome

GMfever

Just wondering did the above fix your problem with the 04. I am having a similar problem.

2004 Monte Carlo LS with dual climate control. The drivers side is not blowing out heat ( only cold air) regardless of where the climate control is at. The passenger side works fine and has heat etc.

Both sides switched up to high heat.

When switched up to defrost they seem to mix together because it is just warm. When switched to floor boards drivers side cold and passenger hot, when switched to vents drivers side cold and passenger hot.

So where do I start looking to trouble shoot.

GMfever

Thanks for the step by step post with the pic. My left air temperature actuator ended up just being stuck and started working once I got to it and messed with the hot/cold and air temperature actuator at the same time. Must have gotten into a bind.

ed2hess

my system hung of this so i am posting just to get out.

mitch48093

Hi,
1st off i have to say this is a great forum,alot of great info in here......Now that im done sucking up ....
I have a 2005 Monte ss and i have the same problem with my driver side actuator door.The ? is my light on the slide switch is lit on the passenger side but not on the driver side....wwould this be normal if moter is bad or is more of a switch problem....I actually looked for fuse but have no idea witch one it is...Is there a seperat fuse for each side...
Any advice would be great....My problem also is wife and i are both dissabled so we are on limited income so really cant afford to take it in to have fixed.....

Thanks, Mitch

Jmitchell26

I have a 99 monte carlo I'm having problems but it's not with the heater. My ac randomly quit blowing cold, I hooked it up to a snap on ac machine and everything is fine. Now I heard it could be the blend door keeping it from working properly. And my question is.. Where and how do I find the door and how do I check tho make sure that's the problem. Thanks in advance, I have an 18 month old daughter and can't have her in the heat.