K 1500 Yukon XL 4WD V8-5.3L VIN T (2001)
8. Lower the vehicle.
9. Remove the right rear quarter trim panel.
10. Remove the Real Time Damping (RTD) Module.
11. Disconnect the electrical connectors.
12. Remove the fastener (5) for the upper auxiliary air duct (6). Carefully slide the duct up, into the headliner, until the bottom edge of the duct is
above the air distributor duct.
13. Remove the fastener (4) for the lower auxiliary air outlet. (5)
14. Remove the fastener (4) for the air distributor duct (3). Remove the air distributor duct (3).