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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 366 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater and Air Conditioning Evaporator and Blower Module Removal and Installation (C59) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Heater and Air Conditioning Evaporator and Blower Module
    GM4298004Courtesy of GENERAL MOTORS COMPANY
  1. Position the Heater and Air Conditioning Evaporator and Blower Module assembly (1) into the vehicle and temporarily support it.
    2. Fig 2: Floor Rear Air Outlet Duct Adapter - Right Side
    GM4371918Courtesy of GENERAL MOTORS COMPANY
  2. Install Floor Rear Air Outlet Duct Adapter (1) - Right Side. Refer to Floor Rear Air Outlet Duct Replacement - Right Side 
    3. Fig 3: Floor Rear Air Outlet Duct Adapter - Left Side
    GM4371974Courtesy of GENERAL MOTORS COMPANY
  3. Install Floor Rear Air Outlet Duct Adapter (1) - Left Side. Refer to Floor Rear Air Outlet Duct Replacement - Left Side 
    4. Fig 4: Instrument Panel Tie Bar and Bolts
    GM4310267Courtesy of GENERAL MOTORS COMPANY
  4. Install Instrument Panel Tie Bar (2). Refer to Instrument Panel Tie Bar Replacement
    5. Fig 5: Heater And Air Conditioning Evaporator And Blower Module Assembly Nut
    GM4390564Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  5. From within the engine compartment, install the HVAC module assembly nut (1) securing the HVAC module assembly to the cowl panel, and tighten to 9 N.m (80 lb in).
    6. Fig 6: Defroster, Instrument Panel Air And Defogger Outlet Ducts
    GM4395809Courtesy of GENERAL MOTORS COMPANY
  6. Install Instrument Panel Outer Air Outlet Duct - Left Side (7)
  7. Install Side Window Defogger Outlet Duct - Left Side (6). Refer to Side Window Defogger Outlet Duct Replacement - Left Side 
  8. Install Instrument Panel Outer Air Outlet Duct - Right Side (5)
  9. Install Side Window Defogger Outlet Duct - Right Side (4). Refer to Side Window Defogger Outlet Duct Replacement - Right Side 
  10. Install Instrument Panel Center Air Outlet Duct (3) - Right Side. Refer to Instrument Panel Center Air Outlet Duct Replacement (Right) 
  11. Install Instrument Panel Center Air Outlet Duct (2) - Left Side. Refer to Instrument Panel Center Air Outlet Duct Replacement (Left) 
  12. Install Windshield Defroster Outlet Duct (1). Refer to Windshield Defroster Outlet Duct Replacement 
    13. Fig 7: Instrument Panel Carrier
    GM4375248Courtesy of GENERAL MOTORS COMPANY
  13. Install Instrument Panel Carrier (1). Refer to Instrument Panel Assembly Replacement (IO5/IO6)Instrument Panel Assembly Replacement (IOB)
    14. Fig 8: Air Conditioning Evaporator and Blower Module Drain Hose
    GM4382116Courtesy of GENERAL MOTORS COMPANY
  14. Install Air Conditioning Evaporator and Blower Module Drain Hose (1). Refer to Air Conditioning Evaporator and Blower Module Drain Hose Replacement (C59) 
    15. Fig 9: Front Floor Console Rear Air Duct
    GM4381090Courtesy of GENERAL MOTORS COMPANY
  15. Install Front Floor Console Rear Air Duct (1). Refer to Front Floor Console Rear Air Duct Replacement (Front C59) Front Floor Console Rear Air Duct Replacement (Rear C59) 
    16. Fig 10: Floor Front Air Outlet Duct - Left Side
    GM4290914Courtesy of GENERAL MOTORS COMPANY
  16. Install Floor Front Air Outlet Duct - Left Side (2). Refer to Floor Front Air Outlet Duct Replacement - Left Side 
    17. Fig 11: Air Conditioning Refrigerant Heat Exchanger
    GM4296647Courtesy of GENERAL MOTORS COMPANY
  17. Install Air Conditioning Refrigerant Heat Exchanger (2) @ Air Conditioning Evaporator Thermal Expansion Valve. Refer to Air Conditioning Refrigerant Heat Exchanger Replacement (LGX With C69) Air Conditioning Refrigerant Heat Exchanger Replacement (LCV) 
  18. Install Heater Outlet Hose Connector @ Heater Core Tube. Refer to Heater Outlet Hose Connector Replacement (without Rear Aux HVAC) Heater Outlet Hose Connector Replacement (with Rear Aux HVAC) Heater Outlet Hose Connector Replacement (LCV without Rear Aux HVAC at Heater Outlet Pipe) Heater Outlet Hose Connector Replacement (with Rear Aux HVAC Heater Outlet Hose to Auxiliary Air Conditioning Evaporator Intermediate Tube) Heater Outlet Hose Connector Replacement (LCV with Rear Aux HVAC at Heater Outlet Pipe) 
  19. Install Heater Inlet Hose Connector @ Heater Core Tube. Refer to Heater Inlet Hose Connector Replacement (without Rear Aux HVAC) Heater Inlet Hose Connector Replacement (with Rear Aux HVAC) Heater Inlet Hose Connector Replacement (with Rear Aux HVAC Heater Inlet Hose to Auxiliary Air Conditioning Evaporator Intermediate Tube) 
  20. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Without KL9)Battery Negative Cable Disconnection and Connection (With KL9)
  21. Fill the cooling system to the proper level. Refer to Cooling System Draining and Filling (GE-47716)Cooling System Draining and Filling (Static)
  22. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging (R-1234yf) 
  23. Perform the actuator calibration procedure. Refer to Actuator Recalibration
  24. Clear the DTCs.
  25. Inspect for coolant leaks.
  26. Inspect for refrigerant leaks.
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