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Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
    2. Fig 1: View Of Heater Hose To Heater Core
    GM1204093Courtesy of GENERAL MOTORS CORP.
  2. UseJ 38185  in order to position aside the heater hose inlet and outlet clamps at the heater core.
  3. Disconnect the inlet and outlet heater hose from the heater core.
  4. Remove the RH Instrument Panel Closeout/Insulator panel. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gages, and Console.
  5. Remove the LH Instrument Panel Closeout/Insulator panel. Refer to Closeout/Insulator Panel Replacement - Left in Instrument Panel, Gages, and Console.
  6. Remove the floor carpet. Refer to Carpet Replacement - Front in Interior Trim.
  7. Remove the rear floor air outlet duct from the holes in the floor reinforcement.
  8. Disconnect the rear floor air outlet duct from the heater core outlet cover.
  9. Remove the rear floor air outlet duct.
    10. Fig 2: Heater Air Outlet Cover Components
    GM1197427Courtesy of GENERAL MOTORS CORP.
  10. Remove the heater core outlet cover screws (2).
  11. Remove the heater core outlet cover heat stakes (1) with a small chisel.
  12. Remove the heater core outlet cover from the HVAC module assembly.
    13. Fig 3: Heater Air Outlet Cover Components
    GM1197437Courtesy of GENERAL MOTORS CORP.
  13. Remove the heater core cover screws (2).
  14. Remove the heater core cover heat stakes (1) with a small chisel.
  15. Remove the heater core cover from the HVAC module assembly.
    16. Fig 4: Heater Core & HVAC Module Assembly
    GM1197439Courtesy of GENERAL MOTORS CORP.
  16. Remove the heater core from the HVAC module assembly.
    17. Fig 5: Heater Core Foam Seal & HVAC Module Assembly
    GM1197441Courtesy of GENERAL MOTORS CORP.
  17. or

    Remove the heater core foam seal (1) from the HVAC module assembly.

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