Removal Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging (Non-HP2) , Refrigerant Recovery and Recharging (HP2) .
- Drain the engine coolant. Refer to Cooling System Draining and Filling (Static Fill) .
- Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
- Disconnect the heater lines (2, 3) from the auxiliary HVAC module at the underside of the vehicle.
- Disconnect the air conditioning lines (4, 5) from the auxiliary HVAC module at the underside of the vehicle.
- Remove the nuts (6) from the studs (1) that secure the auxiliary HVAC module to the underside of the vehicle.
- Lower the vehicle.
- Remove the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side (Extended Wheelbase) , Rear Quarter Trim Panel Replacement - Right Side (Standard Wheelbase) .
- Disconnect the electrical connectors from the Auxiliary HVAC module.
- Remove the fastener (5) for the upper auxiliary air duct (1). Carefully slide the duct up, into the headliner, until the bottom edge of the duct is above the air distributor duct.
- Remove the fasteners (3) retaining the auxiliary HVAC module to the vehicle.
- Remove the auxiliary HVAC module (4) from the vehicle.