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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 >> Heater Hose Replacement - Inlet (LR4, LM7, LQ4) >> 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. Install the inlet heater hose.
    Fig 1: Install Inlet Heater Hose
    G01479058Courtesy of GENERAL MOTORS CORP.
  2. Install the inlet heater hose to the engine.
  3. Connect the heater and surge tank hose to the heater core.

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

  4. Install the heater and surge tank hose to the mounting clip.
  5. Install the air intake tube.
  6. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
    Fig 2: Install Inlet Heater Hose To Engine
    G01479059Courtesy of GENERAL MOTORS CORP.
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