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Installation Procedure

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  1. If replacing the HVAC module assembly(8), transfer the components from the old HVAC module assembly as necessary.
  2. Install the HVAC module assembly (8).
  3. Connect all of the electrical connectors to the HVAC module assembly.
    Fig 1: Installing HVAC Module Assembly
    G01596584Courtesy of GENERAL MOTORS CORP.
  4. Connect the heater hoses to the heater core.
  5. Connect the evaporator tube (4) to the evaporator (1).
  6. Install the accumulator (6) to the evaporator (1).
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  7. Tighten the accumulator retaining nut.

    Tighten 

    Tighten the nut to 4.5 N.m (40 lb in).

  8. Install the I/P carrier. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT in Instrument Panel, Gages and Console.
  9. Evacuate and recharge the A/C system. Refer to REFRIGERANT RECOVERY AND RECHARGING .
  10. Leak test the fittings of the components using the J 39400.
  11. Refill the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 6) or DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 3) in Engine Cooling.
    Fig 2: Installing Accumulator To Evaporator
    G01596585Courtesy of GENERAL MOTORS CORP.
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