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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater Core Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the coolant. Refer to Cooling System Draining and Filling (L26, LY7 GE 47716 Fill) or Cooling System Draining and Filling (L26 Static Fill) or Cooling System Draining and Filling (LY7 Static Fill) or Cooling System Draining and Filling (LS4 GE47716 Fill) or Cooling System Draining and Filling (LS4 Static Fill) .
  2. Use J 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 Instrument Panel Insulator Panel Replacement - Right Side .
  5. Remove the LH instrument panel closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side .
  6. Remove the floor carpet. Refer to Front Floor Panel Carpet Replacement .
  7. Remove the communication interface module. Refer to Communication Interface Module Replacement .
  8. Remove the rear floor air outlet duct from the holes in the floor reinforcement.
  9. Disconnect the rear floor air outlet duct from the heater core outlet cover.
  10. Remove the rear floor air outlet duct.
    11. Fig 1: Identifying Heater Air Outlet Cover Heat Stakes & Screws
    GM1197427Courtesy of GENERAL MOTORS CORP.
  11. Remove the heater core outlet cover screws (2).
  12. Remove the heater core outlet cover heat stakes (1) with a small chisel.
  13. Remove the heater core outlet cover from the HVAC module assembly.
    14. Fig 2: Identifying Heater Core Cover Heat Stakes & Screws
    GM1197437Courtesy of GENERAL MOTORS CORP.
  14. Remove the heater core cover screws (2).
  15. Remove the heater core cover heat stakes (1) with a small chisel.
  16. Remove the heater core cover from the HVAC module assembly.
    17. Fig 3: View Of Heater Core
    GM1197439Courtesy of GENERAL MOTORS CORP.
  17. Remove the heater core from the HVAC module assembly.
    18. Fig 4: View Of Heater Core Foam Seal
    GM1197441Courtesy of GENERAL MOTORS CORP.
  18. Remove the heater core foam seal (1) from the HVAC module assembly.
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