Installation 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.
- Install the auxiliary HVAC module assembly (2) to the vehicle.
- Install the 2 bolts (1) inside the vehicle in order to retain the auxiliary HVAC module to the vehicle.
- Install the forward auxiliary air duct.
- Connect the electrical connectors to the auxiliary HVAC module.
- Install 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) .
- Raise the vehicle.
- Install the nuts (6) that secure the auxiliary HVAC module to the vehicle and tighten to 9 (80 lb in).
- Install the air conditioning lines (4, 5) and the nut to the auxiliary HVAC module and tighten to 16 (12 lb ft).
- Install the heater lines (2, 3) to the auxiliary HVAC module at the underside of vehicle.
- Lower the vehicle.
- Fill the engine coolant. Refer to Cooling System Draining and Filling (Static Fill) .
- Recharge the refrigerant to the system. Refer to Refrigerant Recovery and Recharging (Non-HP2) , Refrigerant Recovery and Recharging (HP2) .
- Leak test the fittings of the component using the J-39400 halogen leak detector.
CAUTION:
Refer to Fastener Caution .