mode selector actuator

[Sierradiesel]

My hvac mode controller motor decided to quit. I have the electric heater controls. Does the new motor come in a certain position and would I have to set the mode on the dash to correspond to this. I would really hate to burn up the new motor-actuator.
This is the one above the throttle pedal, up under the dash.
Thanks.

 

[stacks04]

they have to be set using the tech 2 and hvac learn mode. i am assuming it is an 03 or newer.

 

[stacks04]

there is a way to do it manually if it is 03-newer let me know i will get the info for you.

 

[stacks04]

there is a way to do it manually if it is 03-newer let me know i will get the info for you.

here is the gm replacement instructions,


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Service Information




2004 Chevrolet Chevy K Silverado - 4WD | Sierra, Silverado (VIN C/K) Service Manual | HVAC | HVAC Systems - Automatic | Repair Instructions | Document ID: 888399
Mode Valve Actuator Replacement (W/D07)
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.

1. 
   
   
   
   
2. Remove the floor air outlet duct extension (1) from the floor duct (2).
3. Remove the center console. Refer to Console Replacement .
4. Remove the screws from the center console duct.
5. Remove the center console duct.
   
   
   
   
6. Disconnect the electrical connection from the mode actuator (10).
   
   
   
   
7. Remove the mode actuator mounting screws from the HVAC module.
8. Remove the mode actuator as an assembly with the actuator cam.

Installation Procedure

1. 
   
   
   
   
2. Install the mode actuator as an assembly with the actuator cam.
   • Line up the heater/defroster valve lever with the mode actuator cam slot.
   • Line up the A/C valve lever with the mode actuator cam.​
   Notice: Refer to Fastener Notice in the Preface section.
3. Install the mode actuator mounting screws to the HVAC module.Tighten
   Tighten the screws to 1.6 N·m (14 lb in).
   
   
   
   
   
4. Connect the electrical connection at the mode actuator (10).
   
   
   
   
5. Install the center console duct.
6. Install the screws to the center console duct.Tighten
   Tighten the screws to 1.6 N·m (14 lb in).
7. Install the center console. Refer to Console Replacement .
8. Install the floor air outlet duct extension (1) to the floor air duct (2).

© 2009 General Motors Corporation. All rights reserved.

 

[Sierradiesel]

Joe,
Thanks for the info. Is the new actuator set to some certain position so all you have to do is match up the doors to the cam?