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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1151 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater Pipe Replacement - Inlet >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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 in Engine Cooling.
  2. Remove the air cleaner intake duct. Refer to Air Cleaner Intake Duct Replacement in Engine Controls - 3.4L.
  3. Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement in Engine Cooling.
    4. Fig 1: View Of Heater Hose Pipe Connections
    GM395311Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the inlet heater hose (1) from the inlet pipe (2).
    5. Fig 2: Locating Electrical Harness From The Inlet Pipe Bracket
    GM825410Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the electrical harness from the inlet pipe bracket.
    6. Fig 3: Identifying Heater Inlet Pipe Components
    GM395307Courtesy of GENERAL MOTORS CORP.
  6. Remove the heater inlet pipe nut.
  7. Remove the inlet pipe from the thermostat housing.
  8. Remove and discard the O-ring seal.
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