Originally Posted by charcoal03silvy

I'm going to do a temporary half *** fixed. I'm just gunna close the flap. But how do i get to it???? its the drivers side that doesn't blow hot

Originally Posted by Torque_Wrench

Oh man, it's a bitch! I hate doing those bastards. You gotta go in from the heater box, which is under your dash on the passenger side. It's a couple of long hours my friend.

Originally Posted by charcoal03silvy

Well damn, but its probably worth the effort then paying the stealer several hundred bucks.

So instead of a half assed fix i should do install the new actuator since its such a long process?:nunchuk1:

Originally Posted by Torque_Wrench

hey guys, I've had alot of questions about this in that past few weeks, so I decided to just post u[p the Re-Park or Re-Sync Procedure for the AC Motors. If you're having propblems with the air mode or temp modes, in your AC HVAC system, try this before you go to another drastic decision. Usually this corrects the problem without having to see a GM Service facility. If you Moderators are reading, you may want to add this to a Sticky Thread. Anyways...below is the info you seek....lol.

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.

Place the ignition switch to the OFF position.
Disconnect the scan tool.
Install the HVAC control module.
Connect all previously disconnected components.
Start the vehicle.
Wait 40 seconds for the HVAC control module to self-calibrate.
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)
Clear all DTCs.
Place the ignition switch in the OFF position.
Install the HVAC actuator.
Connect all previously disconnected components.
Start the vehicle.
With the scan tool, initiate the Motor Re-calibration feature of the Heating and Air Conditioning Special Functions menu.
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)
Clear all DTCs.
Place the ignition switch to the OFF position.
Install the HVAC actuator.
Connect all previously disconnected components.
Remove the HVAC/ECAS fuse for a minimum of 10 seconds.
Install the HVAC/ECAS fuse.
Start the vehicle.
Wait 40 seconds for the HVAC control module to self-calibrate.
Verify that no DTCs have set as current DTCs.