[Bob B.]

Yes, the actuator that is above the throttle pedal on the left side of the HVAC box is 'mode' (floor-dash-defrost). The actuator at the bottom of the HVAC box above the transmission tunnel (behind the console if so equipped) controls the left (driver's side) temp.. The right side temp. actuator is on top of the HVAC box behind the radio. Yes you can flip the doors with the actuator off to check their function, and it's a good idea to do so when replacing an actuator as a stuck door can damage an actuator. The split between left and right heat depends on what position the door/actuator is in for its respective side. They are independent. There is a calibration procedure when an actuator is replaced, off hand I don't remember exactly what it is. I will take a look or maybe one of the knowledgeable guys here will comment.