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Installation (Auxiliary Tahoe/Yukon)

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  1. Install the auxiliary HVAC module assembly to the vehicle. Install the 2 bolts inside the vehicle in order to retain the auxiliary HVAC module to the vehicle. See Figure.
  2. Install the upper auxiliary air duct to the air distributor duct. Install the fastener. See Figure. Connect the electrical connectors to the auxiliary HVAC module. Install the electronic suspension control module.
  3. Install the right rear quarter trim panel. Raise the vehicle. Install the nuts that secure the auxiliary HVAC module to the vehicle. See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
  4. Install the air conditioning lines and the nut to the auxiliary HVAC module. See Figure. Tighten to specification. Install the heater lines to the auxiliary HVAC module at the underside of vehicle. See Figure.
  5. Lower the vehicle. Fill the engine coolant. Recharge the refrigerant to the system. See RECOVERY, EVACUATION & RECHARGING in GENERAL SERVICING PROCEDURES article in GENERAL SERVICING.
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