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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1448 (HVAC Systems - General Servicing) >> Repair Instructions >> Heater Hose Replacement - Inlet (Front System Only) >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. 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 (LL8) or Draining and Filling Cooling System (LM4) in Engine Cooling.
    2. Fig 1: Removing Installing Inlet Heater Hose
    GM744973Courtesy of GENERAL MOTORS CORP.
  2. Using the J 43181  , disconnect the inlet heater hose (2) from the heater core inlet tube. See Special Tools and Equipment .
    1. Install the J 43181  to the quick connect on the outlet heater core hose (2). See Special Tools and Equipment .
    2. Close the tool around the inlet heater core hose.
    3. Firmly pull the tool into the quick connect end of the heater hose.
    4. Firmly grasp the heater hose (2). Pull the heater hose forward in order to disengage the hose from the heater core.
  3. Position the inlet heater hose clamp (1) at the engine block using J 38185  .
  4. Remove the heater inlet hose (2) from the inlet hose fitting at the engine block.
  5. Remove the heater inlet hose.
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