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Home >> Hummer >> 2007 >> H3 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Assembly Replacement (Heating Only) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the HVAC module assembly.
  2. Install the HVAC module retaining nuts to the cowl.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Tighten the HVAC module retaining nuts.

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

    4. Fig 1: View Of Evaporator Tube & Compressor Suction Hose At TXV
    GM872539Courtesy of GENERAL MOTORS CORP.
  4. If replacing the HVAC module assembly (8), transfer the components from the old HVAC module assembly, as necessary.
  5. Install the HVAC module assembly (8).
  6. Connect all of the electrical connectors to the HVAC module assembly.
    7. Fig 2: View Of Heater Hose Quick Connects
    GM1222554Courtesy of GENERAL MOTORS CORP.
  7. Connect the heater hose quick connects (2) and (3) to the heater core.
  8. Install the I/P carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, Gages and Console.
  9. Leak test the fittings of the components using the J 39400-A  . See Special Tools .
  10. Refill the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
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