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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 - Outlet (4.3L) >> Removal Procedure

Removal 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. Drain the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  2. Release the outlet heater hose clamp using the J 38185  at the heater core.
  3. Remove the outlet heater hose from the heater core.
    Fig 1: Removing Outlet Heater Hose From Heater Core
    G01466952Courtesy of GENERAL MOTORS CORP.
  4. Release the heater inlet hose clamp using the J 38185  at the intake manifold fitting.
  5. Remove the heater inlet hose from the intake manifold fitting.
  6. Release the heater outlet hose clamp using the J 38185  at the water pump.
  7. Remove the heater outlet hose from the water pump.
    Fig 2: Removing Heater Inlet Hose From Intake Manifold Fitting
    G01466953Courtesy of GENERAL MOTORS CORP.
  8. Remove the heater outlet hose from the retaining clip at the engine water outlet.
    Fig 3: Removing Heater Outlet Hose From Retaining Clip
    G01466954Courtesy of GENERAL MOTORS CORP.
  9. Open the outlet heater hose retaining clip above the right side valve cover. Use a flat bladed tool to open the clip from the bottom.
  10. Remove the outlet heater hose from the vehicle.
    Fig 4: Open Outlet Heater Hose Retaining Clip
    G01466955Courtesy of GENERAL MOTORS CORP.
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