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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 - Outlet (Front Only System) >> 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 cooling system. Refer to Draining and Filling Cooling System (LL8) or Draining and Filling Cooling System (LM4) in Engine Cooling.
  2. Remove the transmission. Refer to Transmission Replacement (LM4) or Transmission Replacement (LL8) in Automatic Transmission - 4L60/4L65-E.
  3. Remove the generator. Refer to Generator Replacement (4.2L Engine) or Generator Replacement (5.3L Engine) in Engine Electrical.
    4. Fig 1: Identifying Hoses
    GM735781Courtesy of GENERAL MOTORS CORP.
  4. Using the J 43181  disconnect the outlet hose from the heater core outlet tube (1). See Special Tools and Equipment .
    1. Install the J 43181  to the outlet heater core hose. See Special Tools and Equipment .
    2. Close the tool around the outlet heater core hose.
    3. Firmly pull the tool into the quick connect end of the heater hose.
    4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.
  5. Remove the heater outlet hose (3) from the heater core (1).
    6. Fig 2: Heater Outlet Hose
    GM735779Courtesy of GENERAL MOTORS CORP.
  6. Position the outlet heater hose clamp (6) at the water pump using J 38185  .
  7. Remove the heater outlet hose (7) from the outlet hose fitting.
  8. Remove the heater outlet hose.
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