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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1887 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater Core Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. 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 (Static Fill) or Draining and Filling Cooling System (GE 47716 Fill) .
  2. Remove the heater outlet hose clamp from the heater core.
  3. Remove the heater outlet hose from the heater core.
  4. Remove the heater inlet hose clamp from the heater core.
  5. Remove the heater inlet hose from the heater core.
  6. Remove the instrument panel retainer. Refer to Instrument Panel Retainer Replacement .
  7. Remove the shift control bracket. Refer to Shift Control Replacement for the Getrag 5 speed transmission or Floor Shift Control Cable Replacement for the 4T45-E transmission or Shift Select Cable Replacement for the 5AT transmission.
    8. Fig 1: Heater Duct, Screws & Heater Core Cover
    GM933065Courtesy of GENERAL MOTORS CORP.
  8. Remove the heater duct screws.
  9. Remove the heater duct.
    10. Fig 2: Heater Core Cover, Screws & Evaporator Case Assembly
    GM933022Courtesy of GENERAL MOTORS CORP.
  10. Remove the heater core cover screws.
  11. Remove the heater core cover.
    12. Fig 3: Heater Core Pipe Cover
    GM932938Courtesy of GENERAL MOTORS CORP.
  12. Remove the heater core pipe cover screw.
  13. Remove the heater core pipe cover.
  14. Remove the heater core pipe foam seal.
    15. Fig 4: Heater Core & End Tanks
    GM932945Courtesy of GENERAL MOTORS CORP.
  15. Grasp the heater core at end tanks and remove heater core. Spray the perimeter of the heater core seal and the heater core pipes at the front of dash with a soap and water mixture to ease removal.
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