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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 982 (Heating, Ventilation And Air Conditioning - Gas) >> Repair Instructions >> Heater Hose Replacement - Inlet (LB7) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the heater hose.
  2. Connect the auxiliary inlet heater hose if equipped.
  3. Fig 1: Installing Inlet Heater Hose To The Engine Coolant Outlet (LB7)
    GM651356Courtesy of GENERAL MOTORS CORP.
  4. Install the inlet heater hose (1) to the engine coolant outlet.
  5. Reposition the inlet heater hose clamp to the engine coolant outlet.
  6. Fig 2: Identifying Heater Hose To Heater Core Fittings
    GM362171Courtesy of GENERAL MOTORS CORP.
  7. Connect the heater and surge tank hoses to the heater core.

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

  8. Install the heater and surge tank hose to the mounting clip.
  9. Install the air intake tube.
  10. Fill the cooling system. Refer to Draining and Filling Cooling System (with HP2) or Draining and Filling Cooling System (without HP2) in Engine Cooling.