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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1337 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. If replacing the HVAC module, transfer the components from the old HVAC module as necessary.
  2. Install the HVAC module (2) to the vehicle (1).
    NOTE: Refer to FASTENER NOTICE .
  3. Install the nuts (4) to the HVAC module (2).

    Tighten 

    Tighten the nuts to 9 N.m (80 lb in).

  4. Install the bolts (4) to the HVAC module (2).

    Tighten 

    Tighten the bolts to 4 N.m (35 lb in).

  5. Connect the electrical harnesses and the ground connections.
  6. Install the HVAC module drain hose.
    Fig 1: Install HVAC Module, Bolts & Nuts
    G01479043Courtesy of GENERAL MOTORS CORP.
  7. Install the instrument panel carrier. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT .
  8. Install the accumulator. Refer to Accumulator Replacement .
  9. Install the surge tank outlet hose to the heater core.

    Firmly push the quick connect onto the heater core pipe until you hear an audible click.

  10. Install the inlet heater hose to the heater core. Firmly push the quick connect onto the heater core pipe until you hear an audible click.
  11. Fill the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM .
    Fig 2: Install Surge Tank Outlet Hose & Inlet Heater Hose
    G01479044Courtesy of GENERAL MOTORS CORP.
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