Hello and welcome.
Are you looking for the drivers side or passenger side actuator?
Your system has one for each side.
OK.
It is located on the side of the HVAC case.
From under the drivers dash, remove the lower dash panel.
The actuator is bolted to the side of teh HVAC case, wjich is to the right of the colunm.
1 electrical connector, 3 screws.
Just line up the new actator with the stud coming out of the case and bolt the new one in. Be sure to have the key off, or the new motor will turn too far before installed an be damaged.
Then do a recalibration like this...
Remove battery cable for 1 minute, then re-install cable.
Start car and do not touch HVAC control for 3 mintues.
Turn car off for 1 minute, then restart and check operation.
Auto technician
GM, ASE Certified Technician. Chevy, Buick, Pontiac, Olds. Over 18 Years experience and growing.