04 C\K - Temperature Valve Actuator Replacement

[shawnvw]

This is in response to a PM I received, but I am posting it here for others to see I have an 04 Silverado LS 5.3L dual climate control (not digital). The driver's side actuator for the blend door started "clicking" it has since stopped and now I have very hot air coming out of the vents. The passenger side works fine. I have been digging all over the internet to find diagrams but have had no success. I have heard that the actuator have plastic gears in them that easily strip out. Would it be possible to give me an idea how hard this will be to replace? Do I have to pull the dash? I saw your calibration steps to listed for the Uplander do I have to perform a calibration (w/o a scan tool) on my truck? Sounds like the actuator has been stripped. It is pretty easy to change, and calibrating it does not need a scan tool. I'll post instructions with pics Temperature Valve Actuator Replacement - Left Side Removal Procedure Notice: In order to avoid actuator damage, DO NOT apply power to the actuator when it is not installed in the HVAC module. Remove the I/P insulator panel. Disconnect the electrical connector (1) from the left air temperature actuator (2). Remove the screws from the left air temperature actuator (2). Remove the left air temperature actuator (2) from the HVAC module assembly (3). Installation Procedure Install the left air temperature actuator (2) to the HVAC module assembly (3). Install the screws to the left air temperature actuator (2). Tighten Tighten the screws to 2 N·m (18 lb in). Install the electrical connector (1) to the left air temperature actuator (2). Install the I/P insulator panel. Reprogram the left air temperature actuator.

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[shawnvw]

Actuator Recalibration

When replacing the HVAC control module it will be necessary to allow the HVAC control module to perform a calibration process. When installing the HVAC control module be sure to perform the following:

Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

1. Place the ignition switch to the OFF position.
2. Disconnect the scan tool.
3. Install the HVAC control module.
4. Connect all previously disconnected components.
5. Start the vehicle.
6. Wait 40 seconds for the HVAC control module to self-calibrate.
7. Verify that no DTCs have set as current DTCs.

When replacing the HVAC actuator it will be necessary to allow the HVAC control module to perform a calibration process. When installing the HVAC actuator be sure to perform one of the following:
Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

Preferred Method (w/ Scan Tool)

1. Clear all DTCs.
2. Place the ignition switch in the OFF position.
3. Install the HVAC actuator.
4. Connect all previously disconnected components.
5. Start the vehicle.
6. With the scan tool, initiate the Motor Re-calibration feature of the Heating and Air Conditioning Special Functions menu.
7. Verify that no DTCs have set as current DTCs.

Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

Alternate Method (w/o Scan Tool)

1. Clear all DTCs.
2. Place the ignition switch to the OFF position.
3. Install the HVAC actuator.
4. Connect all previously disconnected components.
5. Remove the HVAC/ECAS fuse for a minimum of 10 seconds.
6. Install the HVAC/ECAS fuse.
7. Start the vehicle.
8. Wait 40 seconds for the HVAC control module to self-calibrate.
9. Verify that no DTCs have set as current DTCs.

[mike8668]

Shawn, My 04 Sub has hot air thru drivers side only when AC on cold. all others work fine, GM dealer was going to R & R actuator but was refused by our aftermarket warr. is the d/side temp actuator the one shown above? are there more than 1? Disco-ed battery to try to reset it for now.

[shawnvw]

the instruction show how to do the Left side.....drivers side = left side

[therewolf]

Thanks ShawnVW.

I may be needing this myself soon.

[firefighter553]

thanks for the info i really needed it too, but where and how to i get to the I/P insulator panel???? will this work for 2004 yukon xl???

[racerx55]

Vote for sticky, ill be needing it shortly, my pass side door keeps getting stuck.

[rkfguard]

do you have instructions on how to replace the passenger side a/c door actuator..i have a digital dual climate, and my air just starting blowing out hot air only on the passengerside..thanks

[shawnvw]

The I\P insulator panel is the first thing you see when you stick your head under the dash.

The right side actuator require the removal of the entire dash down to the heater box. Huge job if you're up for it

[rkfguard]

im up for it,,how do i remove the whole thing