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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 - Outlet (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 outlet heater hose.
  2. Install the outlet heater hose to the outlet pipe assembly.
  3. Install the auxiliary outlet heater hose if equipped.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 1: Outlet Heater Hose (LB7)
    GM701989Courtesy of GENERAL MOTORS CORP.
  4. Install the NEW outlet heater hose nut (2) and bolt (3) to the engine.

    Tighten:  Tighten the nut and bolt to 25 N.m (18 lb ft).

  5. Connect the outlet heater hose to the heater core.

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

    Fig 2: Identifying Heater Hose To Heater Core Fittings
    GM362171Courtesy of GENERAL MOTORS CORP.
  6. Install the outlet heater hose to the mounting clip.
  7. Install the air intake tube.
  8. Fill the cooling system. Refer to Draining and Filling Cooling System (with HP2) or Draining and Filling Cooling System (without HP2) in Engine Cooling.
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