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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 910 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater Hose Replacement - Inlet (4.3L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply lubricant, GM P/N 9985662, to each end of the heater inlet hose.

    Important:  When installing new heater inlet hose, place the clamp on the hose before installing the hose to the vehicle.

  2. Install the heater inlet hose to the vehicle.
  3. Install the heater inlet hose to the intake manifold fitting.
  4. Install the heater inlet hose clamp using the J 38185  at the intake manifold fitting.
  5. Install the heater inlet hose to the heater core.
  6. Install the heater inlet hose clamp using the J 38185  at the heater core.
    Fig 1: Installing Heater Inlet Hose To Heater Core
    G01466943Courtesy of GENERAL MOTORS CORP.
  7. Place the heater inlet hose in the retaining clip above the right side valve cover.
  8. Close the retaining clip. Ensure that the clip locks.
  9. Fill the engine cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
    Fig 2: Close Retaining Clip
    G01466944Courtesy of GENERAL MOTORS CORP.
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