2003 Chevrolet Tahoe
OEM: 604-106, Item: 44390
Main door, temperature/recirculation actuator, usually found on GM vehicles with Automatic A/C control.
OEM: 604-100, Item: 44497
Temperature door/Aux. unit, usually found on vehicles with Manual A/C control.
OEM: 604-120, Item: 262943
Recirculation actuator for models with MANUAL air conditioning controls. * Will not fit vehicles with automatic temperature control.