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Home >> Chevrolet >> 2006 >> SSR Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (GE 47716) in Engine Cooling.
  3. Remove the heater pipe assembly. Refer to Heater Pipes Replacement .
    4. Fig 1: Identifying Evaporator Drain Tube At HVAC Module
    GM945438Courtesy of GENERAL MOTORS CORP.
  4. Remove the evaporator drain tube (1) from the HVAC module.
  5. Remove the instrument panel (I/P) assembly. Refer to Instrument Panel (I/P) Assembly Replacement in Instrument Panel, Gages, and Console.
    6. Fig 2: Defogger Duct & Components
    GM943433Courtesy of GENERAL MOTORS CORP.
  6. Remove the retainers from the upper defogger duct on the left side window.
  7. Disconnect and remove the upper defogger outlet duct.
    8. Fig 3: View Of HUD
    GM1224615Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the head-up display (HUD) electrical connector.
  9. Remove the HUD retaining nuts.
  10. Remove the screw that secures the HUD to the steering column bracket.
    11. Fig 4: Identifying Lower Defogger Outlet Duct & Retainer
    GM943424Courtesy of GENERAL MOTORS CORP.
  11. Remove the retainer from the lower defogger outlet duct.
  12. Disconnect and remove the outlet duct from the defroster duct.
    13. Fig 5: Floor Air Outlet Duct & Retaining Screws
    GM943584Courtesy of GENERAL MOTORS CORP.
  13. Remove the retaining screws from the floor air outlet duct.
  14. Remove the outlet duct.
    15. Fig 6: Defogger Outlet Ducts & Retainers
    GM943438Courtesy of GENERAL MOTORS CORP.
  15. Remove the retainers from the upper outlet duct on the right side window defogger.
  16. Disconnect and remove the defogger upper outlet duct from the defogger lower outlet duct.
    17. Fig 7: Identifying Defogger Lower Outlet Duct
    GM943428Courtesy of GENERAL MOTORS CORP.
  17. Disconnect the defogger lower outlet duct from the knee bolster bracket.
  18. Disconnect the defogger lower outlet duct from the defroster duct.
  19. Remove the defogger lower outlet duct.
  20. Remove the SIR bracket. Refer to Bracket Replacement - SIR in Instrument Panel, Gages, and Console.
    21. Fig 8: Air Outlet Duct & Retaining Screws
    GM943568Courtesy of GENERAL MOTORS CORP.
  21. Remove the retaining screws from the floor air outlet duct.
  22. Remove the air outlet duct.
    23. Fig 9: Defroster Duct
    GM1229604Courtesy of GENERAL MOTORS CORP.
  23. Remove the defroster duct retaining screws.
  24. Remove the defroster duct.
  25. Disconnect the blower motor electrical connector.
    26. Fig 10: Blower Motor & Retaining Screws At HVAC Module
    GM907907Courtesy of GENERAL MOTORS CORP.
  26. Remove the blower motor retaining screws.
  27. Remove the blower motor from the HVAC module.
    28. Fig 11: HVAC Module, I/P Cross Vehicle Beam & Components
    GM1230181Courtesy of GENERAL MOTORS CORP.
  28. Remove the retaining and sealing nuts from the cowl.
  29. Remove the retaining bolts from the upper I/P cross vehicle beam.
  30. Completely loosen the studs on the HVAC module.
    Fig 12: Identifying Front LH Recirculation Housing Retaining Screw
    GM1247571Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Reposition the HVAC module rearward to access the front left-hand (LH) screw.
    The front LH retaining tab of the recirculation housing is slotted.
  31. Loosen the front LH recirculation housing retaining screw.
    32. Fig 13: Identifying Actuator Electrical Connector
    GM1226128Courtesy of GENERAL MOTORS CORP.
  32. Disconnect the recirculation actuator electrical connector.
  33. Disconnect the HVAC module wiring harness from the recirculation housing.
    34. Fig 14: Identifying Recirculation Housing Retaining Screws
    GM1247576Courtesy of GENERAL MOTORS CORP.
  34. Remove the remaining recirculation housing retaining screws.
  35. Remove the recirculation housing from the HVAC module.
    IMPORTANT: Reposition the center console wiring harness that runs beneath the HVAC module to aide in HVAC module removal.
  36. Reposition the center console wiring harness and the corresponding electrical connectors to the sides of the HVAC module and forward of the lower tie bar.
    37. Fig 15: Identifying HVAC Module
    GM1247574Courtesy of GENERAL MOTORS CORP.
  37. Carefully remove the HVAC module from the vehicle.
    38. Fig 16: Identifying Air Inlet, Drain & Plumbing Seals in HVAC Module
    GM1229638Courtesy of GENERAL MOTORS CORP.
  38. Remove and discard the air inlet, drain and plumbing seals from the HVAC module.
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