Removal (Auxiliary - Avalanche, Escalade, Suburban, Tahoe & Yukon)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Remove the right rear quarter trim panel. Disconnect the electrical connector from the auxiliary air temperature actuator. Remove the retaining screws from the auxiliary air temperature actuator. Remove the auxiliary air temperature actuator from the rear auxiliary HVAC module. See Fig 1.