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Heating, Ventilation and Air Conditioning: Removal & Installation GMC Acadia I рестайлинг

Automatic HVAC System 72 illustrations ~3684 words

Installation Procedure

  1. Inspect the new seal washer for any signs of cracks, cuts or damage. IMPORTANT: Flat washer type seals do not require lubrication. Do not use a damaged seal washer.
  2. Using a lint-free clean, dry cloth, clean the sealing surfaces of the A/C refrigerant components.
  3. Carefully install the new seal washer onto the A/C refrigerant component.
  4. The washer must completely bottom against the surface of the fitting.
  5. Assemble the remaining A/C refrigerant components. Refer to the appropriate repair procedure. IMPORTANT: After tightening the A/C components, there should be a slight sealing washer gap of approximately 1.2 mm (3/64 in) between the A/C line and the A/C component.

Scheme 1

Scheme 1: Removal Procedure
Scheme 1: Removal Procedure
  1. Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure For compression style fittings use a back up wrench on the fitting (2) and loosen the fitting nut (1). For banjo style fittings remove the bolt retaining the banjo type fitting.
  2. Remove the O-ring seal from the A/C refrigerant component.
  3. Inspect the O-ring seal for signs of damage.
  4. Inspect the A/C refrigerant components for damage or burrs. Repair if necessary.
  5. Discard the O-ring seal.

Scheme 2

Scheme 2: Installation Procedure
Scheme 2: Installation Procedure
  1. Inspect the new O-ring seal for any sign or cracks, cuts or damage. Replace if necessary.
  2. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant components.
  3. Lightly coat the new O-ring seal with mineral base 525 viscosity refrigerant oil. IMPORTANT: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the new O-ring seal to enter the refrigerant system.
  4. Carefully slide the new O-ring seal onto the A/C refrigerant component. IMPORTANT: DO NOT reuse O-ring seals.
  5. The O-ring seal must be fully seated.
  6. Assemble the A/C components. Refer to the appropriate repair procedure. For compression style fittings use a back up wrench on the fitting (2) and tighten the fitting nut (1) to specification. For banjo style fittings install the bolt retaining the banjo type fitting and tighten to specification.

Scheme 3

Scheme 3: Removal Procedure
Scheme 3: Removal Procedure

Scheme 4

Scheme 4
Scheme 4

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6
  1. Remove the front compartment front sight shield. Refer to «Front Compartment Front Sight Shield Replacement (Enclave)»(ref-610048-S22815318952014042100000) , «Front Compartment Front Sight Shield Replacement (Traverse)»(ref-610048-S37790321692014042100000) , «Front Compartment Front Sight Shield Replacement (Acadia)»(ref-610048-S08590244402014042100000) .
  2. Recover the refrigerant from the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  3. Remove the coolant recovery reservoir. Refer to «Coolant Recovery Reservoir Replacement»(ref-610069-S20497175232014042100000) .
  4. Remove the air conditioning compressor hose nut (1) at the air conditioning refrigerant heat exchange.
  5. Remove the air conditioning compressor hose (2) from air conditioning refrigerant heat exchange.
  6. Remove and discard the sealing washer (3).
  7. Remove the air conditioning compressor hose nut (1) at the compressor.
  8. Remove the air conditioning compressor hose (2) from the compressor.
  9. Remove and discard the sealing washers (3).
  10. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-610031-S32962375812014042100000) .
  11. Remove the front bumper fascia. Refer to «Front Bumper Fascia Replacement (Acadia)»(ref-610046-S14458116992014042100000) , «Front Bumper Fascia Replacement (Enclave)»(ref-610046-S18888979742014042100000) , «Front Bumper Fascia Replacement (Traverse)»(ref-610046-S01707175432014042100000) .
  12. Remove the air conditioning compressor hose nut (1) at the condenser.
  13. Remove the air conditioning compressor hose (2) from the condenser.
  14. Remove and discard the sealing washer (3).
  15. Remove the air conditioning refrigerant heat exchange from the condenser (4).
  16. Remove and discard the sealing washer (3).
  17. Remove the air conditioning compressor hose (1) from to top of the vehicle.
  1. Install NEW sealing washers (3) to the air conditioning compressor hose and the air conditioning refrigerant heat exchange (4). Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  2. Install the air conditioning refrigerant heat exchange to the condenser (4).
  3. Install the air conditioning compressor hose (2) to the condenser.
  4. Install the air conditioning compressor hose nut (1) at the condenser and tighten to 22 N.m (16 lb ft). CAUTION: Refer to «Fastener Caution»(ref-610030-S34989781762014042100000) .
  5. Install the front bumper fascia. Refer to «Front Bumper Fascia Replacement (Acadia)»(ref-610046-S14458116992014042100000) , «Front Bumper Fascia Replacement (Enclave)»(ref-610046-S18888979742014042100000) , «Front Bumper Fascia Replacement (Traverse)»(ref-610046-S01707175432014042100000) .
  6. Lower the vehicle.
  7. Install NEW sealing washers (3) to the air conditioning compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  8. Install the air conditioning compressor hose (2) to the compressor.
  9. Install the air conditioning compressor hose nut (1) at compressor and tighten to 22 N.m (16 lb ft).
  10. Install NEW sealing washers (3) to the air conditioning compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  11. Install the air conditioning compressor hose (2) to the air conditioning refrigerant heat exchange.
  12. Install the air conditioning compressor hose nut (1) to air conditioning refrigerant heat exchange and tighten to 22 N.m (16 lb ft).
  13. Install the coolant recovery reservoir. Refer to «Coolant Recovery Reservoir Replacement»(ref-610069-S20497175232014042100000) .
  14. Evacuate and charge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  15. Install the front compartment front sight shield. Refer to «Front Compartment Front Sight Shield Replacement (Enclave)»(ref-610048-S22815318952014042100000) , «Front Compartment Front Sight Shield Replacement (Traverse)»(ref-610048-S37790321692014042100000) , «Front Compartment Front Sight Shield Replacement (Acadia)»(ref-610048-S08590244402014042100000) .

Scheme 7

Scheme 7
Scheme 7

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12
  1. Remove the front compartment front sight shield. Refer to «Front Compartment Front Sight Shield Replacement (Enclave)»(ref-610048-S22815318952014042100000) , «Front Compartment Front Sight Shield Replacement (Traverse)»(ref-610048-S37790321692014042100000) , «Front Compartment Front Sight Shield Replacement (Acadia)»(ref-610048-S08590244402014042100000) .
  2. Remove the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(ref-610074-S40770128942014042100000) .
  3. Recover the refrigerant from the air conditioning system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  4. Remove the coolant recovery reservoir. Refer to «Coolant Recovery Reservoir Replacement»(ref-610069-S20497175232014042100000) .
  5. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-610067-S27722301992014042100000) .
  6. Reposition the power brake booster vacuum hose out of the way. Refer to «Power Brake Booster Vacuum Check Valve and Hose Replacement»(ref-610068-S22774108682014042100000) .
  7. Remove the engine strut mount-right side. Refer to «Engine Mount Strut Replacement - Right Side»(ref-610074-S22217156762014042100000) .
  8. Remove the air conditioning compressor hose nut (1) at the air conditioning refrigerant heat exchanger.
  9. Remove the air conditioning compressor hose (2) from air conditioning refrigerant heat exchanger.
  10. Remove and discard the sealing washer (3).
  11. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-610031-S32962375812014042100000) .
  12. Remove the front bumper fascia. Refer to «Front Bumper Fascia Replacement (Acadia)»(ref-610046-S14458116992014042100000) , «Front Bumper Fascia Replacement (Enclave)»(ref-610046-S18888979742014042100000) , «Front Bumper Fascia Replacement (Traverse)»(ref-610046-S01707175432014042100000) .
  13. Remove the air conditioning compressor hose nut (1) at the air conditioning condenser.
  14. Remove the air conditioning compressor hose (2) from the air conditioning condenser.
  15. Remove and discard the sealing washer (3).
  16. Remove the air conditioning refrigerant heat exchanger (1) from the air conditioning condenser.
  17. Remove and discard the sealing washer (2).
  18. Lower the vehicle.
  19. Remove the air conditioning refrigerant heat exchanger nuts (1) from the air conditioning refrigerant heat exchanger (3) at the auxiliary air conditioning evaporator tubes.
  20. Remove the air conditioning refrigerant heat exchanger from the auxiliary air conditioning evaporator tubes.
  21. Remove and discard the sealing washers (2).
  22. Remove the air conditioning refrigerant heat exchanger nut (1) from the air conditioning refrigerant heat exchanger (3) at the air conditioning evaporator thermal expansion valve.
  23. Remove the air conditioning refrigerant heat exchanger (3) from the air conditioning evaporator thermal expansion valve.
  24. Remove and discard the sealing washers (2).
  25. Remove the air conditioning refrigerant heat exchanger fasteners (1) from the air conditioning refrigerant heat exchanger (2).
  26. Remove the air conditioning refrigerant heat exchanger (1) from to top of the vehicle.
  1. Install NEW sealing washers to the air conditioning refrigerant heat exchanger (1). Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  2. Install the air conditioning refrigerant heat exchanger (1) to the vehicle.
  3. Install the air conditioning refrigerant heat exchanger fasteners (1) to the vehicle and tighten to 9 (80 lb in). CAUTION: Refer to «Fastener Caution»(ref-610030-S34989781762014042100000) .
  4. Install NEW sealing washers (2) to the air conditioning refrigerant heat exchanger (3). Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  5. Install the air conditioning refrigerant heat exchanger (3) to the air conditioning evaporator thermal expansion valve.
  6. Install the air conditioning refrigerant heat exchanger nut (1) to the air conditioning evaporator thermal expansion valve and tighten to 22 (16 lb ft).
  7. Install NEW sealing washers (2) to the air conditioning refrigerant heat exchanger. Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  8. Install the air conditioning refrigerant heat exchanger (3) to the auxiliary air conditioning evaporator tubes.
  9. Install the air conditioning refrigerant heat exchanger nuts (1) to the auxiliary air conditioning evaporator tubes and tighten to 22 (16 lb ft).
  10. Raise and support the vehicle. Refer to «Air Cleaner Assembly Replacement»(ref-610067-S07372555972014042100000) .
  11. Install NEW sealing washers (2) to the air conditioning refrigerant heat exchanger (1). Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  12. Install the air conditioning refrigerant heat exchanger (1) to the air conditioning condenser.
  13. Install NEW sealing washers (3) to the air conditioning compressor hose (2). Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  14. Install the air conditioning compressor hose (2) to the air conditioning condenser.
  15. Install the air conditioning compressor hose nut (1) to the air conditioning condenser and tighten to 22 (16 lb ft).
  16. Install the front bumper fascia. Refer to «Front Bumper Fascia Replacement (Acadia)»(ref-610046-S14458116992014042100000) , «Front Bumper Fascia Replacement (Enclave)»(ref-610046-S18888979742014042100000) , «Front Bumper Fascia Replacement (Traverse)»(ref-610046-S01707175432014042100000) .
  17. Lower the vehicle.
  18. Install NEW sealing washers (3) to the air conditioning refrigerant heat exchanger. Refer to «Air Conditioning System Seal Replacement»(ref-610057-S00391860632014042100000) .
  19. Install the air conditioning compressor hose (2) to the air conditioning refrigerant heat exchanger.
  20. Install the air conditioning compressor hose nut (1) to air conditioning refrigerant heat exchanger and tighten to 22 N.m (16 lb ft).
  21. Install the engine strut mount-right side. Refer to «Engine Mount Strut Replacement - Right Side»(ref-610074-S22217156762014042100000) .
  22. Reposition the power brake booster vacuum hose to the vehicle. Refer to «Power Brake Booster Vacuum Check Valve and Hose Replacement»(ref-610068-S22774108682014042100000) .
  23. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-610067-S27722301992014042100000) .
  24. Install the coolant recovery reservoir. Refer to «Coolant Recovery Reservoir Replacement»(ref-610069-S20497175232014042100000) .
  25. Evacuate and charge the air conditioning system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  26. Install the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(ref-610074-S40770128942014042100000) .
  27. Install the front compartment front sight shield. Refer to «Front Compartment Front Sight Shield Replacement (Enclave)»(ref-610048-S22815318952014042100000) , «Front Compartment Front Sight Shield Replacement (Traverse)»(ref-610048-S37790321692014042100000) , «Front Compartment Front Sight Shield Replacement (Acadia)»(ref-610048-S08590244402014042100000) .

Scheme 13

Scheme 13: Air Conditioning (AC) Refrigerant Filter Replacement
Scheme 13: Air Conditioning (AC) Refrigerant Filter Replacement
CalloutComponent Name
Preliminary Procedure Remove the Auxiliary A/C Evaporator Tube. Refer to Auxiliary Air Conditioning Evaporator Tube Replacement
1Auxiliary A/C Refrigerant Filter.

Air Conditioning (AC) Refrigerant Filter Replacement

Air Conditioning Refrigerant Service Valve Core Replacement

Special Tools

  1. GE 50078 Electronic Leak Detector
  2. GE 46246 Valve Core Tool

For equivalent regional tools. Refer to Special Tools .

Scheme 14

Scheme 14: Removal Procedure
Scheme 14: Removal Procedure
  1. Recover the refrigerant from the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  2. Using the GE 46246 Valve Core Tool, remove the valve core (1) from the service port.
  1. Install the valve core (1) to the service port. CAUTION: Refer to «Fastener Caution»(ref-610030-S34989781762014042100000) .
  2. Using the GE 46246 Valve Core Tool, tighten the valve core.
  3. Evacuate and recharge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  4. Leak test the fittings of the component using GE 50078 Electronic Leak Detector.

Scheme 15

Scheme 15: Air Conditioning Refrigerant Desiccant Replacement
Scheme 15: Air Conditioning Refrigerant Desiccant Replacement
CalloutComponent Name
Preliminary Procedure Recover the refrigerant from the air conditioning system. Refer to Refrigerant Recovery and Recharging . Remove the radiator air side baffle and deflector. Refer to Radiator Air Side Baffle and Deflector Replacement .
1Air Conditioning Receiver and Dehydrator Cover
2Air Conditioning Receiver and Dehydrator Retainer
3Air Conditioning Receiver and Dehydrator Plug
4Air Conditioning Receiver and Dehydrator O-ring (Qty: 2) NOTE: Remove and discard the old O-ring and replace with a NEW O-ring. Refer to Air Conditioning O-Ring Seal Replacement .
5Air Conditioning Refrigerant Desiccant
NOTE
Remove and discard the old O-ring and replace with a NEW O-ring. Refer to Air Conditioning O-Ring Seal Replacement .

Air Conditioning Refrigerant Desiccant Replacement

Scheme 16

Scheme 16: Air Conditioning Evaporator Thermal Expansion Valve Replacement
Scheme 16: Air Conditioning Evaporator Thermal Expansion Valve Replacement
CalloutComponent Name
Preliminary Procedures Recover the refrigerant from the air conditioning system. Refer to Refrigerant Recovery and Recharging . Remove the air conditioning refrigerant heat exchanger from the air conditioning evaporator thermal expansion valve. Refer to Air Conditioning Refrigerant Heat Exchanger Replacement . Reposition the power brake booster vacuum and position hose out of the way. Refer to Power Brake Booster Vacuum Check Valve and Hose Replacement .
1Thermal Expansion Valve Bolt (Qty: 2) CAUTION: Refer to Fastener Caution .
2Sealing Washer (Qty: 2) NOTE: Remove and discard the sealing washers and replace with NEW sealing washers. Refer to Air Conditioning System Seal Replacement .
3Air Conditioning Evaporator Thermal Expansion Valve
CAUTION
Refer to Fastener Caution .
NOTE
Remove and discard the sealing washers and replace with NEW sealing washers. Refer to Air Conditioning System Seal Replacement .

Air Conditioning Evaporator Thermal Expansion Valve Replacement

Scheme 17

Scheme 17: Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
Scheme 17: Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
CalloutComponent Name
Preliminary Procedure Remove the electrical connector from the air conditioning refrigerant pressure sensor.
1Air Conditioning Refrigerant Pressure Sensor O-ring Procedure Remove and discard the old O-ring and replace with a NEW O-ring. Refer to Air Conditioning O-Ring Seal Replacement .
2Air Conditioning Refrigerant Pressure Sensor CAUTION: Refer to Fastener Caution .
CAUTION
Refer to Fastener Caution .

Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement

Scheme 18

Scheme 18: Evaporator Air Temperature Sensor Replacement
Scheme 18: Evaporator Air Temperature Sensor Replacement
CalloutComponent Name
Preliminary Procedure Remove the I/P insulator panel - right side. Refer to Instrument Panel Insulator Panel Replacement - Right Side .
1Evaporator Temperature Sensor Procedure Disconnect the sensor electrical connector. Apply downward pressure on sensor to release tabs for removal.

Evaporator Air Temperature Sensor Replacement

Scheme 19

Scheme 19: Air Conditioning Condenser Replacement
Scheme 19: Air Conditioning Condenser Replacement
CalloutComponent Name
Preliminary Procedure Recover the refrigerant from the air conditioning system. Refer to Refrigerant Recovery and Recharging . Remove the air conditioning refrigerant heat exchanger from the condenser. Refer to Air Conditioning Refrigerant Heat Exchanger Replacement . Pinch fastening tabs together at top of condenser and slide upward to remove.
1Condenser Assembly NOTE: Bottom of condenser mounts into holding fixtures at bottom of radiator.
NOTE
Bottom of condenser mounts into holding fixtures at bottom of radiator.

Air Conditioning Condenser Replacement

Scheme 20

Scheme 20: Air Conditioning and Heater Module Assembly Removal and Installation
Scheme 20: Air Conditioning and Heater Module Assembly Removal and Installation
CalloutComponent Name
Preliminary Procedure Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) , Cooling System Draining and Filling (Vac N Fill) Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove heater inlet hose from heater core. Refer to Heater Inlet Hose Replacement . Remove heater outlet hose from heater core. Refer to Heater Outlet Hose Replacement . Remove A/C lines from TXV. Refer to Air Conditioning Evaporator Thermal Expansion Valve Replacement . Remove I/P Carrier Assembly. Refer to Instrument Panel Carrier Replacement .
1HVAC Module Assembly Nut (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten 6 N.m (53 lb in)
2HVAC Module to I/P Carrier Bolt (Qty: 2) Tighten 6 N.m (53 lb in)
3HVAC Module Assembly Procedure Cap or plug A/C and heater pipe openings to prevent spillage of fluids upon removal.
CAUTION
Refer to Fastener Caution .

Air Conditioning and Heater Module Assembly Removal and Installation

Scheme 21

Scheme 21: Air Conditioning Evaporator Core Replacement
Scheme 21: Air Conditioning Evaporator Core Replacement
CalloutComponent Name
Preliminary Procedure Prior to performing any repairs set the temperature door to the full hot position. This will prevent binding of the temperature door when reassembling HVAC module. Remove the HVAC Module. Refer to Air Conditioning and Heater Module Assembly Removal and Installation . Remove Thermal Expansion Valve (TXV). Refer to Air Conditioning Evaporator Thermal Expansion Valve Replacement .
1Evaporator Upper Case Screw (Qty: 17) CAUTION: Refer to Fastener Caution . Tighten 6 N.m (53 lb in)
2Evaporator Upper Case
3Evaporator Core NOTE: Ensure all seals are in place upon installation.
CAUTION
Refer to Fastener Caution .
NOTE
Ensure all seals are in place upon installation.

Air Conditioning Evaporator Core Replacement

Scheme 22

Scheme 22: Air Conditioning Evaporator and Blower Module Drain Hose Replacement
Scheme 22: Air Conditioning Evaporator and Blower Module Drain Hose Replacement
CalloutComponent Name
Preliminary Procedure Remove the left front floor console extension panel. Reposition carpet and pad from evaporator drain hose area.
1Evaporator Drain Hose Clamp
2Evaporator Drain Hose

Air Conditioning Evaporator and Blower Module Drain Hose Replacement

Scheme 23

Scheme 23: Heater Inlet Hose Replacement
Scheme 23: Heater Inlet Hose Replacement
CalloutComponent Name
Preliminary Procedure Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) , Cooling System Draining and Filling (Vac N Fill)
1Heater Inlet Hose Clamp (Qty: 3)
2Heater Inlet Hose Procedure Disconnect the heater inlet hose from the auxiliary heater pipe, if equipped.

Heater Inlet Hose Replacement

Scheme 24

Scheme 24: Heater Outlet Hose Replacement
Scheme 24: Heater Outlet Hose Replacement
CalloutComponent Name
Preliminary Procedure Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) , Cooling System Draining and Filling (Vac N Fill)
1Heater Outlet Hose Clamp (Qty: 3)
2Heater Outlet Hose Procedure Disconnect the heater outlet hose from the auxiliary heater pipe, if equipped.

Heater Outlet Hose Replacement

Scheme 25

Scheme 25: Heater Core Tube Replacement
Scheme 25: Heater Core Tube Replacement
CalloutComponent Name
Preliminary Procedure Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) , Cooling System Draining and Filling (Vac N Fill) . Remove heater inlet hose from heater core. Refer to Heater Inlet Hose Replacement . Remove heater outlet hose from heater core. Refer to Heater Outlet Hose Replacement . Remove heater core cover. Refer to Heater Core Cover Replacement .
1Heater Core Tube Clip (Qty: 2) Procedure Use new Heater Core Tube Clips upon installation.
2Heater Core Tube Procedure Cap or plug heater core, hoses and tubes to prevent any fluid leakage. Position tube forward to release from heater core and slide rearward to remove. TIP: Ensure heater core tube seals are in place upon installation.

Heater Core Tube Replacement

Scheme 26

Scheme 26: Air Inlet Screen Cleaning
Scheme 26: Air Inlet Screen Cleaning
CalloutComponent Name
Preliminary Procedures Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement . Remove the remote battery ground stud. Remove the underhood electrical center cover. Reposition any wiring or hoses to gain access to air inlet screen.
1Air Inlet Screen Procedure Lift the air inlet grille panel enough to access the air inlet screen. Use shop vacuum to remove any debris from the air inlet screen.

Air Inlet Screen Cleaning

Scheme 27

Scheme 27: Passenger Compartment Air Filter Housing Replacement
Scheme 27: Passenger Compartment Air Filter Housing Replacement
CalloutComponent Name
Preliminary Procedure Remove the instrument panel compartment. Refer to Instrument Panel Compartment Replacement (Acadia) , Instrument Panel Compartment Replacement (Enclave) , Instrument Panel Compartment Replacement (Traverse)
1Passenger Compartment Air Filter Access Hole Cover Procedure Squeeze the housing cover tabs for removal.
2Passenger Compartment Air Filter

Passenger Compartment Air Filter Housing Replacement

Scheme 28

Scheme 28: Air Inlet Assembly Replacement
Scheme 28: Air Inlet Assembly Replacement
CalloutComponent Name
Preliminary Procedure Remove the air conditioning and heater module assembly (HVAC). Refer to Air Conditioning and Heater Module Assembly Removal and Installation . Reposition the wiring harnesses before removal.
1Air Inlet Assembly Screw Qty: (2) CAUTION: Refer to Fastener Caution .
2Air Inlet Assembly Procedure Disconnect the electrical connectors. Transfer all necessary components. Perform the actuator re-calibrated procedure. Refer to Actuator Recalibration .
CAUTION
Refer to Fastener Caution .

Air Inlet Assembly Replacement

Scheme 29

Scheme 29: Blower Motor Control Module Replacement
Scheme 29: Blower Motor Control Module Replacement
CalloutComponent Name
Preliminary Procedures Remove the right side instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side . Remove the instrument panel compartment assembly. Refer to Instrument Panel Compartment Replacement (Acadia) , Instrument Panel Compartment Replacement (Enclave) , Instrument Panel Compartment Replacement (Traverse) .
1Blower Motor Control Module Screw (Qty: 2) CAUTION: Refer to Fastener Caution .
2Blower Motor Control Module Procedure Lift up and out through the instrument panel compartment assembly opening. Disconnect blower motor control module connector.
CAUTION
Refer to Fastener Caution .

Blower Motor Control Module Replacement

Scheme 30

Scheme 30: Blower Motor Replacement
Scheme 30: Blower Motor Replacement
CalloutComponent Name
Preliminary Procedure Remove the right side instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side .
1Blower Motor Screw (Qty: 3) CAUTION: Refer to Fastener Caution .
2Blower Motor Assembly Disconnect the blower motor electrical connector. Disconnect the blower motor cooling duct.
CAUTION
Refer to Fastener Caution .

Blower Motor Replacement

Scheme 31

Scheme 31: Side Window Defogger Outlet Grille Replacement - Left Side (Acadia)
Scheme 31: Side Window Defogger Outlet Grille Replacement - Left Side (Acadia)
CalloutComponent Name
1Side Window Defogger Outlet Grille - Left Side Procedure Use a flat bladed plastic trim tool to release the outlet grille from the instrument panel.

Side Window Defogger Outlet Grille Replacement - Left Side (Acadia)

Scheme 32

Scheme 32: Side Window Defogger Outlet Grille Replacement - Left Side (Enclave)
Scheme 32: Side Window Defogger Outlet Grille Replacement - Left Side (Enclave)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Enclave) .
2Side Window Defogger Outlet Grille - Left Side Procedure Release the tab on the outlet grille from the underside of the trim panel and push the air outlet upward out of the trim panel.

Side Window Defogger Outlet Grille Replacement - Left Side (Enclave)

Scheme 33

Scheme 33: Side Window Defogger Outlet Grille Replacement - Left Side (Traverse)
Scheme 33: Side Window Defogger Outlet Grille Replacement - Left Side (Traverse)
CalloutComponent Name
Preliminary Procedure Remove the instrument panel trim pad. Refer to Instrument Panel Trim Pad Replacement (Traverse) .
1Pal Nuts (Qty: 2) Procedure Tighten the pal nuts until fully seated but not stripped
2Side Window Defroster Outlet Duct Assembly
3Side Window Defogger Outlet Grille - Left Side

Side Window Defogger Outlet Grille Replacement - Left Side (Traverse)

Scheme 34

Scheme 34: Side Window Defogger Outlet Grille Replacement - Right Side (Acadia)
Scheme 34: Side Window Defogger Outlet Grille Replacement - Right Side (Acadia)
CalloutComponent Name
Preliminary Procedure Remove the instrument panel trim pad. Refer to Instrument Panel Trim Pad Replacement (Acadia w/RPO UV6) , Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) .
1Side Window Defroster Outlet Duct Screw CAUTION: Refer to Fastener Caution .
2Pal Nut Procedure Tighten the pal nuts until fully seated but not stripped
3Side Window Defroster Outlet Duct Assembly
4Side Window Defogger Outlet Grille - Right Side
CAUTION
Refer to Fastener Caution .

Side Window Defogger Outlet Grille Replacement - Right Side (Acadia)

Scheme 35

Scheme 35: Side Window Defogger Outlet Grille Replacement - Right Side (Enclave)
Scheme 35: Side Window Defogger Outlet Grille Replacement - Right Side (Enclave)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Enclave) .
2Side Window Defogger Outlet Grille Screw CAUTION: Refer to Fastener Caution .
3Side Window Defogger Outlet Grille - Right Side Procedure Release the tab on the outlet grille from the underside of the trim pad and push the air outlet upward out of the trim pad.
CAUTION
Refer to Fastener Caution .

Side Window Defogger Outlet Grille Replacement - Right Side (Enclave)

Scheme 36

Scheme 36: Side Window Defogger Outlet Grille Replacement - Right Side (Traverse)
Scheme 36: Side Window Defogger Outlet Grille Replacement - Right Side (Traverse)
CalloutComponent Name
Preliminary Procedure Remove the instrument panel trim pad. Refer to Instrument Panel Trim Pad Replacement (Traverse) .
1Side Window Defroster Outlet Duct Screw CAUTION: Refer to Fastener Caution .
2Pal Nut Procedure Tighten the pal nut until fully seated but not stripped
3Side Window Defroster Outlet Duct Assembly
4Side Window Defogger Outlet Grille - Right Side
CAUTION
Refer to Fastener Caution .

Side Window Defogger Outlet Grille Replacement - Right Side (Traverse)

Scheme 37

Scheme 37: Air Distributor Case Replacement
Scheme 37: Air Distributor Case Replacement
CalloutComponent Name
Preliminary Procedures Prior to performing any repairs set the temperature door to the full hot position. This will prevent binding of the temperature door when reassembling HVAC module. Remove the heater and air conditioning evaporator and blower module assembly. Refer to Air Conditioning and Heater Module Assembly Removal and Installation . Disconnect the electrical connectors.
1Air Distributor Case Assembly Fastener (Qty: 4) CAUTION: Refer to Fastener Caution .
2Air Distributor Case Assembly Procedure Lift up and tilt back air distributor case assembly, to release the case from the lower blower case assembly. Transfer all part as necessary.
CAUTION
Refer to Fastener Caution .

Air Distributor Case Replacement

Scheme 38

Scheme 38: Instrument Panel Outer Air Outlet Bezel Replacement (Enclave)
Scheme 38: Instrument Panel Outer Air Outlet Bezel Replacement (Enclave)
CalloutComponent Name
1Instrument Panel Outer Air Outlet Bezel Procedures Use a flat bladed plastic trim tool in order to release the retainer clips securing the instrument panel outer air outlet bezel to the instrument panel assembly. Disconnect electrical connection.

Instrument Panel Outer Air Outlet Bezel Replacement (Enclave)

Scheme 39

Scheme 39: Instrument Panel Outer Air Outlet Replacement - Left Side (Acadia)
Scheme 39: Instrument Panel Outer Air Outlet Replacement - Left Side (Acadia)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Acadia w/ RPO UV6) , Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) .
2Pal Nuts (Qty: 4) Procedure Tighten the pal nuts until fully seated but not stripped.
3Instrument Panel Outer Air Outlet - Left Side

Instrument Panel Outer Air Outlet Replacement - Left Side (Acadia)

Scheme 40

Scheme 40: Instrument Panel Outer Air Outlet Replacement - Left Side (Enclave)
Scheme 40: Instrument Panel Outer Air Outlet Replacement - Left Side (Enclave)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Enclave) .
2Instrument Panel Outer Air Outlet - Left Side Procedure Unsnap the air outlet from the back side of the trim panel and push the air outlet forward out of the trim panel.

Instrument Panel Outer Air Outlet Replacement - Left Side (Enclave)

Scheme 41

Scheme 41: Instrument Panel Outer Air Outlet Replacement - Left Side (Traverse)
Scheme 41: Instrument Panel Outer Air Outlet Replacement - Left Side (Traverse)
CalloutComponent Name
1Instrument Panel Trim Pad. Refer to Instrument Panel Trim Pad Replacement (Traverse) .
2Pal Nuts (Qty: 4) Procedure Tighten the pal nuts until fully seated but not stripped
3Instrument Panel Outer Air Outlet - Left

Instrument Panel Outer Air Outlet Replacement - Left Side (Traverse)

Scheme 42

Scheme 42: Instrument Panel Center Air Outlet Replacement (Acadia)
Scheme 42: Instrument Panel Center Air Outlet Replacement (Acadia)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Acadia w/ RPO UV6) , Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) .
2Pal Nuts (Qty: 6) Procedure Tighten the pal nuts until fully seated but not stripped
3Instrument Panel Center Air Outlet Assembly

Instrument Panel Center Air Outlet Replacement (Acadia)

Scheme 43

Scheme 43: Instrument Panel Center Air Outlet Replacement (Enclave)
Scheme 43: Instrument Panel Center Air Outlet Replacement (Enclave)
CalloutComponent Name
1Instrument Panel Outer Air Outlet Bezel Refer to Instrument Panel Outer Air Outlet Bezel Replacement (Enclave) .
2Instrument Panel Center Air Outlet Procedure Unsnap the air outlet from the trim panel.

Instrument Panel Center Air Outlet Replacement (Enclave)

Scheme 44

Scheme 44: Instrument Panel Center Air Outlet Replacement (Traverse)
Scheme 44: Instrument Panel Center Air Outlet Replacement (Traverse)
CalloutComponent Name
1Instrument Panel Trim Pad. Refer to Instrument Panel Trim Pad Replacement (Traverse) .
2Pal Nuts (Qty: 8) Procedure Tighten the pal nuts until fully seated but not stripped
3Instrument Panel Center Air Outlet Assembly

Instrument Panel Center Air Outlet Replacement (Traverse)

Scheme 45

Scheme 45: Instrument Panel Outer Air Outlet Replacement - Right Side (Acadia)
Scheme 45: Instrument Panel Outer Air Outlet Replacement - Right Side (Acadia)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Acadia w/ RPO UV6) , Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) .
2Pal Nuts (Qty: 5) Procedure Tighten the pal nuts until fully seated but not stripped.
3Instrument Panel Outer Air Outlet - Right Side

Instrument Panel Outer Air Outlet Replacement - Right Side (Acadia)

Scheme 46

Scheme 46: Instrument Panel Outer Air Outlet Replacement - Right Side (Enclave)
Scheme 46: Instrument Panel Outer Air Outlet Replacement - Right Side (Enclave)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Enclave) .
2Instrument Panel Outer Air Outlet - Right Side Procedure Unsnap the air outlet from the back side of the trim panel and push the air outlet forward out of the trim panel.

Instrument Panel Outer Air Outlet Replacement - Right Side (Enclave)

Scheme 47

Scheme 47: Instrument Panel Outer Air Outlet Replacement - Right Side (Traverse)
Scheme 47: Instrument Panel Outer Air Outlet Replacement - Right Side (Traverse)
CalloutComponent Name
1Instrument Panel Trim Pad. Refer to Instrument Panel Trim Pad Replacement (Traverse) .
2Pal Nuts (Qty: 4) Procedure Tighten the pal nuts until fully seated but not stripped
3Instrument Panel Outer Air Outlet - Right

Instrument Panel Outer Air Outlet Replacement - Right Side (Traverse)

Scheme 48

Scheme 48: Floor Front Air Outlet Duct Replacement
Scheme 48: Floor Front Air Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedures Remove the left side front floor panel carpet. Refer to Front Floor Panel Carpet Replacement - Left Side . Remove the right side front floor panel carpet. Refer to Front Floor Panel Carpet Replacement - Right Side . Remove the radio front floor console speaker assembly. Refer to Radio Front Floor Console Speaker Replacement .
1Floor Front Air Outlet Duct Fastener (Qty: 2)
2Floor Front Air Outlet Duct Front Adaptor Procedure After removing the floor front air outlet duct as an assembly, separate the floor front air outlet duct front adaptor from the duct.
3Floor Front Air Outlet Duct Center Adaptor Procedure After removing the floor front air outlet duct as an assembly, separate the floor front air outlet duct center adaptor from the duct.
4Floor Front Air Outlet Duct Procedure Remove the floor front air outlet duct and the floor front air outlet adaptors as an assembly.

Floor Front Air Outlet Duct Replacement

Scheme 49

Scheme 49: Floor Air Outlet Duct Replacement - Left Side
Scheme 49: Floor Air Outlet Duct Replacement - Left Side
CalloutComponent Name
Preliminary Procedure Remove the left side front floor console extension panel. Refer to Front Floor Console Extension Panel Replacement - Left Side (Acadia) , Front Floor Console Extension Panel Replacement - Left Side (Enclave) , Front Floor Console Extension Panel Replacement - Left Side (Traverse) .
1Floor Air Outlet Duct Screw (Qty: 2) CAUTION: Refer to Fastener Caution .
2Floor Air Outlet Duct - Left Side
CAUTION
Refer to Fastener Caution .

Floor Air Outlet Duct Replacement - Left Side

Scheme 50

Scheme 50: Windshield Defroster Duct Replacement
Scheme 50: Windshield Defroster Duct Replacement
CalloutComponent Name
Preliminary Procedure Remove the I/P trim pad. Refer to Instrument Panel Trim Pad Replacement (Acadia w/ RPO UV6) , Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) , Instrument Panel Trim Pad Replacement (Enclave) , Instrument Panel Trim Pad Replacement (Traverse)
1Windshield Defroster Duct Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 2 N.m (18 lb in)
2Windshield Defroster Duct
CAUTION
Refer to Fastener Caution .

Windshield Defroster Duct Replacement

Scheme 51

Scheme 51: Side Window Defogger Outlet Duct Replacement - Left Side
Scheme 51: Side Window Defogger Outlet Duct Replacement - Left Side
CalloutComponent Name
Preliminary Procedure Remove the I/P carrier. Refer to Instrument Panel Carrier Replacement
1Left Side Window Defogger Outlet Duct Screw CAUTION: Refer to Fastener Caution . Tighten 2 N.m (18 lb in)
2Left Side Window Defogger Outlet Duct Procedure Squeeze tab to release from windshield defroster duct.
CAUTION
Refer to Fastener Caution .

Side Window Defogger Outlet Duct Replacement - Left Side

Scheme 52

Scheme 52: Side Window Defogger Outlet Duct Replacement - Right Side
Scheme 52: Side Window Defogger Outlet Duct Replacement - Right Side
CalloutComponent Name
Preliminary Procedure Remove the I/P trim pad. Refer to Instrument Panel Trim Pad Replacement (Acadia w/ RPO UV6) , Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) , Instrument Panel Trim Pad Replacement (Enclave) , Instrument Panel Trim Pad Replacement (Traverse) .
1Right Side Window Defogger Outlet Duct Screw CAUTION: Refer to Fastener Caution . Tighten 2 N.m (18 lb in)
2Right Side Window Defogger Outlet Duct Procedure Squeeze tab to release from windshield defroster duct.
CAUTION
Refer to Fastener Caution .

Side Window Defogger Outlet Duct Replacement - Right Side

Scheme 53

Scheme 53: Floor Air Outlet Duct Replacement - Right Side
Scheme 53: Floor Air Outlet Duct Replacement - Right Side
CalloutComponent Name
Preliminary Procedure Remove the right side front floor console extension panel. Refer to Front Floor Console Extension Panel Replacement - Right Side (Acadia) , Front Floor Console Extension Panel Replacement - Right Side (Enclave) , Front Floor Console Extension Panel Replacement - Right Side (Traverse) .
1Floor Air Outlet Duct Screw (Qty: 2) CAUTION: Refer to Fastener Caution .
2Floor Air Outlet Duct - Right Side
CAUTION
Refer to Fastener Caution .

Floor Air Outlet Duct Replacement - Right Side

Scheme 54

Scheme 54: Rear Floor Auxiliary Air Outlet Duct Replacement
Scheme 54: Rear Floor Auxiliary Air Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedures Remove the front floor console assembly. Refer to Front Floor Console Replacement (Acadia) , Front Floor Console Replacement (Enclave) , Front Floor Console Replacement (Traverse) . Remove the rear floor carpet. Refer to Rear Floor Panel Carpet Replacement .
1Rear Floor Auxiliary Air Outlet Duct Fastener (Qty: 2) CAUTION: Refer to Fastener Caution .
2Floor Rear Air Distributor Assembly Procedure Remove the floor rear air distributor as an assembly and separate the ducts. Replace the necessary duct.
3Rear Floor Auxiliary Air Outlet Duct Procedure Remove the floor rear air distributor as an assembly and separate the ducts. Replace the necessary duct.
CAUTION
Refer to Fastener Caution .

Rear Floor Auxiliary Air Outlet Duct Replacement

Scheme 55

Scheme 55: Heater Core Cover Replacement
Scheme 55: Heater Core Cover Replacement
CalloutComponent Name
Preliminary Procedures Remove the left front floor console extension panel. Refer to Front Floor Console Extension Panel Replacement - Left Side (Acadia) , Front Floor Console Extension Panel Replacement - Left Side (Enclave) , Front Floor Console Extension Panel Replacement - Left Side (Traverse) . Remove the floor outlet air duct. Refer to Floor Air Outlet Duct Replacement - Left Side . Reposition any wiring harness to access heater core cover.
1Heater Core Cover Screw (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 3 N.m (27 lb in)
2Heater Core Cover
CAUTION
Refer to Fastener Caution .

Heater Core Cover Replacement

Scheme 56

Scheme 56: Heater Core Replacement
Scheme 56: Heater Core Replacement
CalloutComponent Name
Preliminary Procedure Remove the heater core tubes from heater core while leaving the heater hoses connected to the tubes. Cap or plug heater core and tube openings to prevent spillage of fluids upon removal. Refer to Heater Core Tube Replacement .
1Heater Core Procedure Reposition the heater core outward from the heater case to ease in removal. Mark the location of the center foam seal from the old heater core to the new heater core. Press on foam seals to activate adhesive. Keep the heater core horizontal and straight when inserting into the HVAC module in order to prevent foam seal damage. Push heater core until the foam seal around the heater core tank is inserted into the HVAC module and the heater core is fully seated.

Heater Core Replacement

Scheme 57

Scheme 57: Removal Procedure
Scheme 57: Removal Procedure
  1. Drain the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-610069-S38071288072014042100000) , «Cooling System Draining and Filling (Vac N Fill)»(ref-610069-S10278530552014042100000) .
  2. Before removing the quick connect fitting from the vehicle, clean area and remove any loose dirt or debris.
  3. Remove the fitting from the tube by squeezing the retainer clip legs together and pulling the fitting from the tube.
  4. Remove the retainer from the tube by folding the legs back on themselves and sliding the retainer clip out of the tube (1).
  5. Place a flat-blade tool through the window of the quick connect fitting to just below the outer bushing and above the top O-ring (2).
  6. Remove the outer bushing with a gentle prying motion. Discard the outer bushing. CAUTION: Do NOT damage the fitting while removing the outer bushing. Damage may affect the seal integrity and cause a coolant leak.
  7. Remove other components and discard.
  8. Thoroughly clean and inspect the inside surface of the fitting for nicks, scratches or cracks. Remove any dirt or debris using water and a lint free cloth.
  1. Lubricate O-rings with coolant.
  2. Install the first O-ring and gently push down into the O-ring pocket (4).
  3. Install the midspacer and gently push down to first O-ring (3).
  4. Install the second O-ring and gently push down to the top of midspacer (2).
  5. Install the retainer clip by lining up the retainer legs with windows on the fitting housing (1). Push the retainer clip down until the retainer clip legs are engaged into the windows.
  6. Clean and inspect the pipe end for any nicks, scratches or cracks.
  7. Install the fitting to the vehicle by pushing the fitting onto the tube until an audible click is heard. Pull back to verify the connection is secure.
  8. Fill the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-610069-S38071288072014042100000) , «Cooling System Draining and Filling (Vac N Fill)»(ref-610069-S10278530552014042100000) .

Scheme 58

Scheme 58: Auxiliary Blower Control Module Replacement
Scheme 58: Auxiliary Blower Control Module Replacement
CalloutComponent Name
Preliminary Procedures Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) , Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB5) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB4) . Disconnect the blower motor control module electrical connector.
1Blower Motor Resistor Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Blower Motor Control Module
CAUTION
Refer to Fastener Caution .

Auxiliary Blower Control Module Replacement

Scheme 59

Scheme 59: Auxiliary Blower Motor Replacement
Scheme 59: Auxiliary Blower Motor Replacement
CalloutComponent Name
Preliminary Procedures Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) , Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB5) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB4) . Disconnect the blower motor electrical connector.
1Blower Motor Tab Retaining Screw (Qty: 3)
2Blower Motor Assembly

Auxiliary Blower Motor Replacement

Scheme 60

Scheme 60: Auxiliary Heater Air Outlet Duct Replacement
Scheme 60: Auxiliary Heater Air Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedure Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) , Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB5) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB4) .
1Auxiliary Heater Air Outlet Duct Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 10 (89 lb in)
2Auxiliary Heater Air Outlet Duct Procedure Squeeze both ends of distribution duct to release for removal.
CAUTION
Refer to Fastener Caution .

Auxiliary Heater Air Outlet Duct Replacement

Scheme 61

Scheme 61: Auxiliary Air Conditioning Air Outlet Duct Replacement
Scheme 61: Auxiliary Air Conditioning Air Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedure Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) , Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) , Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB5) , Quarter Lower Rear Trim Panel Replacement (Acadia with TB4) . Remove the upper air temperature sensor, if equipped.
1Auxiliary Air Conditioning Air Outlet Duct Bolt CAUTION: Refer to Fastener Caution . Tighten 10 (89 lb in)
2Auxiliary Air Conditioning Air Outlet Duct Procedure Squeeze both ends of distribution duct to release for removal.
CAUTION
Refer to Fastener Caution .

Auxiliary Air Conditioning Air Outlet Duct Replacement

Scheme 62

Scheme 62: Auxiliary Heater Core Replacement
Scheme 62: Auxiliary Heater Core Replacement
CalloutComponent Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to Auxiliary HVAC Module Removal and Installation . Disconnect any wiring connectors or harnesses form HVAC module. Remove evaporator tube retaining clips before removing lower gasket and cover.
1HVAC Module Gasket
2Auxiliary HVAC Module Lower Cover Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . Procedure Remove any fastener clips that secure cover to module. Tighten 3 N.m (27 lb in)
3Auxiliary HVAC Module Lower Cover
4HVAC Module Case Screw (Qty: 10). Procedure Remove any fastener clips that secure cover to module. Tighten 3 N.m (27 lb in)
5Auxiliary HVAC Heater Core TIP: Ensure all seals and gaskets are in place upon installation.
CAUTION
Refer to Fastener Caution .

Auxiliary Heater Core Replacement

Scheme 63

Scheme 63: Auxiliary Heater Core Tube Replacement
Scheme 63: Auxiliary Heater Core Tube Replacement
CalloutComponent Name
Preliminary Procedure Remove the auxiliary heater core. Refer to Auxiliary Heater Core Replacement .
1Heater Core Tube Clip (Qty: 2) Procedure Expand the retaining clips outward to aid in removal.
2Heater Core Tube O-rings (Qty: 2) TIP: Do not reuse O-rings
3Heater Core Tube

Auxiliary Heater Core Tube Replacement

Scheme 64

Scheme 64: Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement
Scheme 64: Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement
CalloutComponent Name
Preliminary Procedures Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the retaining nut and the auxiliary A/C evaporator tubes from the auxiliary HVAC module. Refer to Auxiliary Air Conditioning Evaporator Tube Replacement .
1Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Procedure Insert a small phillips screwdriver through one of the thermal expansion valve (TXV) bolt holes and into the threaded hole of the mounting plate. Install the TXV bolt into the other hole without the screwdriver. Remove the screwdriver and install the other TXV bolt. Tighten 5 (44 lb in)
2Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Sealing Washer Procedure Remove and discard the sealing washer. Refer to Air Conditioning System Seal Replacement .
3Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Procedure The auxiliary A/C refrigerant filter must be replaced when the auxiliary thermal expansion valve is serviced. Refer to Air Conditioning (AC) Refrigerant Filter Replacement .
CAUTION
Refer to Fastener Caution .

Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement

Scheme 65

Scheme 65: Removal Procedure
Scheme 65: Removal Procedure

Scheme 66

Scheme 66
Scheme 66

Scheme 67

Scheme 67
Scheme 67

Scheme 68

Scheme 68
Scheme 68
  1. Recover the refrigerant from the air conditioning (A/C) system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  2. Drain the engine coolant. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-610069-S38071288072014042100000) , «Cooling System Draining and Filling (Vac N Fill)»(ref-610069-S10278530552014042100000) .
  3. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-610031-S32962375812014042100000) .
  4. Remove the right rear wheelhouse liner panel. Refer to «Rear Wheelhouse Liner Replacement (Traverse)»(ref-610049-S26778164922014042100000) , «Rear Wheelhouse Liner Replacement (Enclave)»(ref-610049-S37625675762014042100000) , «Rear Wheelhouse Liner Replacement (Acadia)»(ref-610049-S41689152982014042100000) .
  5. Disconnect the heater tubes (2, 3) from the auxiliary heater and air conditioning evaporator and blower module (HVAC) at the underside of the vehicle.
  6. Remove the auxiliary air conditioning evaporator tube nut (6) from the auxiliary HVAC module stud (1).
  7. Disconnect the auxiliary air conditioning evaporator tube (4, 5) from the auxiliary HVAC module at the underside of the vehicle.
  8. Remove the nuts from the studs that secure the auxiliary HVAC module to the underside of the vehicle.
  9. Lower the vehicle.
  10. Remove the right rear quarter trim panel. Refer to «Quarter Lower Rear Trim Panel Replacement (Traverse with TB5)»(ref-610045-S19497736332014042100000) , «Quarter Lower Rear Trim Panel Replacement (Traverse with TB4)»(ref-610045-S15068625462014042100000) , «Quarter Lower Rear Trim Panel Replacement (Enclave with TB5)»(ref-610045-S39198832572014042100000) , «Quarter Lower Rear Trim Panel Replacement (Enclave with TB4)»(ref-610045-S04561387912014042100000) , «Quarter Lower Rear Trim Panel Replacement (Acadia with TB5)»(ref-610045-S18648303692014042100000) , «Quarter Lower Rear Trim Panel Replacement (Acadia with TB4)»(ref-610045-S00699881982014042100000) .
  11. Disconnect the electrical connectors from the auxiliary HVAC module.
  12. Remove the upper auxiliary air conditioning air outlet duct (2). Refer to «Auxiliary Air Conditioning Air Outlet Duct Replacement»(ref-610057-S03425330202014042100000) .
  13. Remove the lower auxiliary heater air outlet duct (2). Refer to «Auxiliary Heater Air Outlet Duct Replacement»(ref-610057-S23426183692014042100000) .
  14. Remove the fasteners (3) retaining the auxiliary HVAC module to the vehicle.
  15. Remove the auxiliary HVAC module (4) from the vehicle.
  1. Install the auxiliary HVAC module assembly (4) to the vehicle.
  2. Install the 2 bolts (3) inside the vehicle in order to retain the auxiliary HVAC module to the vehicle and tighten to 10 (89 lb in). CAUTION: Refer to «Fastener Caution»(ref-610030-S34989781762014042100000) .
  3. Install the upper auxiliary air conditioning air outlet duct (2). Refer to «Auxiliary Air Conditioning Air Outlet Duct Replacement»(ref-610057-S03425330202014042100000) .
  4. Install the lower auxiliary heater air outlet duct (2). Refer to «Auxiliary Heater Air Outlet Duct Replacement»(ref-610057-S23426183692014042100000) .
  5. Connect the electrical connectors to the auxiliary HVAC module.
  6. Install the right rear quarter trim panel. Refer to «Quarter Lower Rear Trim Panel Replacement (Traverse with TB5)»(ref-610045-S19497736332014042100000) , «Quarter Lower Rear Trim Panel Replacement (Traverse with TB4)»(ref-610045-S15068625462014042100000) , «Quarter Lower Rear Trim Panel Replacement (Enclave with TB5)»(ref-610045-S39198832572014042100000) , «Quarter Lower Rear Trim Panel Replacement (Enclave with TB4)»(ref-610045-S04561387912014042100000) , «Quarter Lower Rear Trim Panel Replacement (Acadia with TB5)»(ref-610045-S18648303692014042100000) , «Quarter Lower Rear Trim Panel Replacement (Acadia with TB4)»(ref-610045-S00699881982014042100000) .
  7. Raise the vehicle.
  8. Install the 2 nuts that secure the auxiliary HVAC module to the vehicle and tighten to 9 N.m (80 lb in).
  9. Install the auxiliary air conditioning evaporator tube (4, 5). and the nut (6) to the auxiliary HVAC module stud (1) and tighten to 22 (16 lb ft).
  10. Install the auxiliary air conditioning evaporator tube nut (6) to the auxiliary HVAC module stud (1) and tighten to 22 (16 lb ft).
  11. Install the heater tube (2, 3) to the auxiliary HVAC module at the underside of vehicle.
  12. Install the right rear wheelhouse liner panel. Refer to «Rear Wheelhouse Liner Replacement (Traverse)»(ref-610049-S26778164922014042100000) , «Rear Wheelhouse Liner Replacement (Enclave)»(ref-610049-S37625675762014042100000) , «Rear Wheelhouse Liner Replacement (Acadia)»(ref-610049-S41689152982014042100000) .
  13. Lower the vehicle.
  14. Fill the engine cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-610069-S38071288072014042100000) , «Cooling System Draining and Filling (Vac N Fill)»(ref-610069-S10278530552014042100000) .
  15. Recharge the air conditioning system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  16. Inspect for air conditioning system for refrigerant leaks. Refer to «Leak Testing»(ref-610057-S36311208162014042100000) .

Scheme 69

Scheme 69: Auxiliary Air Conditioning Evaporator Replacement
Scheme 69: Auxiliary Air Conditioning Evaporator Replacement
CalloutComponent Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to Auxiliary HVAC Module Removal and Installation . Disconnect any wiring connectors or harnesses from HVAC module. Remove evaporator tube retaining clips before removing lower gasket and lower cover.
1HVAC Module Gasket
2Auxiliary HVAC Module Lower Cover Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . TIP: Remove any fastener clips that secure cover to module. Tighten 3 N.m (27 lb in)
3Auxiliary HVAC Module Lower Cover
4HVAC Module Case Screw (Qty: 10). TIP: Remove any fastener clips that secure cover to module. Tighten 3 N.m (27 lb in)
5Auxiliary HVAC Evaporator Core TIP: Ensure all seals and gaskets are in place upon installation.
CAUTION
Refer to Fastener Caution .

Auxiliary Air Conditioning Evaporator Replacement

Scheme 70

Scheme 70: Removal Procedure
Scheme 70: Removal Procedure

Scheme 71

Scheme 71
Scheme 71

Scheme 72

Scheme 72
Scheme 72
  1. Recover the refrigerant from the air conditioning system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  2. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-610031-S32962375812014042100000) .
  3. Remove the right rear inner wheelhouse liner. Refer to «Rear Wheelhouse Liner Replacement (Traverse)»(ref-610049-S26778164922014042100000) , «Rear Wheelhouse Liner Replacement (Enclave)»(ref-610049-S37625675762014042100000) , «Rear Wheelhouse Liner Replacement (Acadia)»(ref-610049-S41689152982014042100000) .
  4. Remove the exhaust flex pipe. Refer to «Exhaust Flexible Pipe Replacement»(ref-610075-S30854594592014042100000) .
  5. Remove auxiliary evaporator tube nut (1) from the auxiliary air conditioning evaporator.
  6. Remove auxiliary air conditioning evaporator tubes, (2) from the auxiliary air conditioning evaporator (4).
  7. Remove auxiliary air conditioning evaporator and heater tube clip nuts (3) and release auxiliary air conditioning evaporator tubes from clips.
  8. Remove air cleaner duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-610067-S27722301992014042100000) .
  9. Remove the retaining nuts (1) and the auxiliary air conditioning evaporator tubes (2) from the front air conditioning refrigerant heat exchanger.
  10. Remove the auxiliary air conditioning evaporator and heater tube assembly retaining nuts (1) from the retaining studs and clips, from the four location along the frame.
  11. Remove the auxiliary air conditioning evaporator tubes (3) from the clamps (2).
  12. Remove the auxiliary air conditioning evaporator tubes from the vehicle.

Note. The replacement A/C and heater pipes are shipped in two sections and spliced together upon installation. Refer to Auxiliary Heater and Air Conditioning Pipe Replacement/Repair .

  1. Install the auxiliary air conditioning evaporator tubes to the vehicle.
  2. Install the auxiliary air conditioning evaporator tubes (3) to the clamps (2).
  3. Install the auxiliary air conditioning evaporator and heater tube assembly retaining nut (1) to the retaining studs and clips (2) along the frame in the four locations.
  4. Install the auxiliary air conditioning evaporator tubes (2) to the front air conditioning refrigerant heat exchanger. CAUTION: Refer to «Fastener Caution»(ref-610030-S34989781762014042100000) .
  5. Install the retaining nuts (1) and tighten to 22 (16 lb ft).
  6. Install air cleaner duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-610067-S27722301992014042100000) .
  7. Install the auxiliary air conditioning evaporator tubes (2) to the auxiliary HVAC module (4).
  8. Install retaining nut (1) and tighten to 22 (16 lb ft).
  9. Install auxiliary evaporator tubes to retaining clips and install nuts (3).
  10. Install the exhaust flex pipe. Refer to «Exhaust Flexible Pipe Replacement»(ref-610075-S30854594592014042100000) .
  11. Install the right rear inner wheelhouse liner if necessary. Refer to «Rear Wheelhouse Liner Replacement (Traverse)»(ref-610049-S26778164922014042100000) , «Rear Wheelhouse Liner Replacement (Enclave)»(ref-610049-S37625675762014042100000) , «Rear Wheelhouse Liner Replacement (Acadia)»(ref-610049-S41689152982014042100000) .
  12. Lower the vehicle.
  13. Recharge the air conditioning system. Refer to «Refrigerant Recovery and Recharging»(ref-610057-S29818155892014042100000) .
  14. Inspect for refrigerant leaks. Refer to «Leak Testing»(ref-610057-S36311208162014042100000) .

Auxiliary Heater and Air Conditioning Pipe Replacement/Repair

Tools Required

J 41425 A/C Line Repair Kit

The rear AC or Heater lines can be repaired in sections.

Replacement lines through GMSPO contain all 4 lines in two sections.

Use the J 41425 A/C line repair kit when any of the following actions damage the rear A/C or heater lines

  1. Rub-through
  2. Collision damage
  3. Leakage in the system

More articles — Heating, Ventilation and Air Conditioning