Yukon XL 4WD V8-5.3L (2011)
10. Remove the forward auxiliary air duct from HVAC module.
11. Remove the fasteners (1) retaining the auxiliary HVAC module to the vehicle.
12. Remove the auxiliary HVAC module (2) from the vehicle.
Installation Procedure
1. Install the auxiliary HVAC module assembly (2) to the vehicle.
2. Install the 2 bolts (1) inside the vehicle in order to retain the auxiliary HVAC module to the vehicle.
3. Install the forward auxiliary air duct.
4. Connect the electrical connectors to the auxiliary HVAC module.
5. Install the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side .
6. Raise the vehicle.
