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

Automatic HVAC System 45 illustrations ~3631 words

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-365243-S07204316382010070600000) .
  2. Remove the drive belt. Refer to «Drive Belt Replacement»(ref-365266-S33372321292010070600000) .
  3. Remove the clutch plate retaining bolt (1).
  4. Remove the clutch plate assembly (2).
  5. Remove the clutch hub/bearing snap ring (3).
  6. Remove the clutch hub/bearing assembly (4).
  7. Remove clutch coil harness retainer.
  8. Remove the snap ring (5) from the clutch coil (6).
  9. Remove the clutch coil (6) from the A/C compressor (7).

Installation Procedure

  1. Install the clutch coil (6) to the A/C compressor (7).
  2. Install the snap ring (5) to the clutch coil (6).
  3. Install clutch coil harness retainer.
  4. Install the clutch hub/bearing assembly (4).
  5. Install the clutch hub/bearing snap ring (3).
  6. Place a small amount of oil on the thinnest air gap shim and place it inside the clutch plate.
  7. Install the clutch plate assembly.
  8. Measure the air gap between the pulley and the drive plate. Adjust the shims to achieve a 0.35-0.65 mm (0.014-0.026 in) air gap.
  9. Install the clutch plate retaining bolt. Tighten: Tighten the bolt to 18 N.m (13 lb ft).
  10. Install the drive belt. Refer to «Drive Belt Replacement»(ref-365266-S33372321292010070600000) .
  11. Lower the vehicle.
  1. Remove the seal washer from the A/C refrigerant component.
  2. Inspect the seal washer for any signs of damage.
  3. Inspect the A/C refrigerant components for damage or burrs. Repair if necessary.
  4. Discard the sealing washer.
  1. Inspect the new seal washer for any signs of cracks, cuts, or damage. 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.
  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.
  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.
  4. Carefully slide the new O-ring seal onto the A/C refrigerant component.
  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.
  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Remove front facia. Refer to «Front Bumper Fascia Replacement (Acadia)»(ref-365242-S24053907482010070600000) or «Front Bumper Fascia Replacement (Enclave)»(ref-365242-S10822448542010070600000) or «Front Bumper Fascia Replacement (OUTLOOK)»(ref-365242-S03426116272010070600000) or «Front Bumper Fascia Replacement (Traverse)»(ref-365242-S41920769542010070600000)
  3. Remove front bumper upper fascia support. Refer to «Front Bumper Fascia Upper Support Replacement (Enclave)»(ref-365242-S33603536182010070600000) or «Front Bumper Fascia Upper Support Replacement (OUTLOOK, Acadia, Traverse)»(ref-365242-S40598505392010070600000)
  4. Remove the electrical connector from the A/C pressure switch.
  5. Remove the discharge line bolt from the A/C compressor (1).
  6. Disconnect the discharge line from the A/C compressor (3).
  7. Remove the discharge line to condenser bolt (1).
  8. Disconnect the discharge line from the condenser (3).
  9. Remove the discharge line.
  10. Remove the A/C pressure switch. Refer to «Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement»(ref-365250-S27998768792010070600000) .
  11. Remove and discard the discharge line O-rings (2).
  1. Install new O-rings to the discharge line (2). Refer to «Air Conditioning O-Ring Seal Replacement»(ref-365250-S00841993622010070600000) .
  2. Install the A/C pressure switch. Refer to «Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement»(ref-365250-S27998768792010070600000) .
  3. Connect the discharge line to the condenser (3).
  4. Install the discharge line to condenser bolt (1). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  5. Connect the discharge line to the A/C compressor (3).
  6. Install the discharge line bolt to the A/C compressor (1). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  7. Install front bumper upper fascia support. Refer to «Front Bumper Fascia Upper Support Replacement (Enclave)»(ref-365242-S33603536182010070600000) or «Front Bumper Fascia Upper Support Replacement (OUTLOOK, Acadia, Traverse)»(ref-365242-S40598505392010070600000)
  8. Install front facia. Refer to «Front Bumper Fascia Replacement (Acadia)»(ref-365242-S24053907482010070600000) or «Front Bumper Fascia Replacement (Enclave)»(ref-365242-S10822448542010070600000) or «Front Bumper Fascia Replacement (OUTLOOK)»(ref-365242-S03426116272010070600000) or «Front Bumper Fascia Replacement (Traverse)»(ref-365242-S41920769542010070600000)
  9. Evacuate and recharge the refrigerant system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  10. Leak test the fittings of the component using J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .
  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-365256-S37977066062010070600000) .
  3. Remove the suction hose bracket nut (1) and remove bracket.
  4. Remove the suction hose/pipe bolt from the A/C compressor.
  5. Disconnect the suction hose/pipe from the A/C compressor.
  6. Remove the suction hose/pipe nut (1) from TXV tube.
  7. Disconnect the suction hose/pipe from the TXV tube (2).
  8. Remove the suction hose/pipe.
  9. Remove and discard the suction hose/pipe O-rings.
  1. Install new O-rings to the suction hose/pipe. Refer to «Air Conditioning O-Ring Seal Replacement»(ref-365250-S00841993622010070600000) .
  2. Connect the suction hose/pipe to the TXV tube.
  3. Install the suction hose/pipe to TXV nut (1). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  4. Connect the suction hose/pipe to the A/C compressor.
  5. Install the suction hose/pipe bolt to the A/C compressor. Tighten: Tighten the bolt to 9 N.m (80 lb in).
  6. Install the suction hose/pipe bracket and secure with nut (1).
  7. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-365256-S37977066062010070600000) .
  8. Evacuate and recharge the refrigerant system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  9. Leak test the fittings of the component using J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .
  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Remove injector sight shield.
  3. Remove right engine mount strut. Refer to «Engine Mount Strut Replacement - Right Side»(ref-365266-S35897459922010070600000)
  4. Remove underhood electrical center. Refer to «Underhood Electrical Center or Junction Block Replacement»(ref-365277-S40686588082010070600000)
  5. Remove underhood electrical center bracket.
  6. Reposition wiring harness as required.
  7. Remove front bumper upper facia support. Refer to «Front Bumper Fascia Upper Support Replacement (Enclave)»(ref-365242-S33603536182010070600000) or «Front Bumper Fascia Upper Support Replacement (OUTLOOK, Acadia, Traverse)»(ref-365242-S40598505392010070600000)
  8. Remove the liquid line bolt from the A/C condenser (1).
  9. Disconnect the liquid line from the A/C condenser (2).
  10. Remove the liquid line to auxiliary tube nut (1).
  11. Remove TXV tube retainer nut (1).
  12. Disconnect the liquid line (2) and evaporator hose/tube from the TXV at plenum panel.
  13. Remove the attaching liquid line clamp nuts along right inner frame rail and plenum panel (1).
  14. Remove the liquid line bracket bolt at right side of upper tie bar support (2).
  15. Remove the liquid line.
  16. Remove and discard the discharge line sealing washer.
  1. Install new sealing washers to the liquid line. Refer to «Air Conditioning System Seal Replacement»(ref-365250-S15870229332010070600000) .
  2. Connect the liquid line (2) and evaporator hose/tube to the TXV at plenum panel.
  3. Install the liquid line to TXV nut (1). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  4. Connect the liquid line to the auxiliary evaporator tube.
  5. Install the liquid line nut (1). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  6. Install the liquid line to the condenser (2).
  7. Install the liquid line nut (1). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  8. Install liquid line bracket bolt to upper tie bar support (2). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  9. Install the liquid line bracket nuts along frame rail and plenum panel (1). Tighten: Tighten the bolt to 4 N.m (35 lb in).
  10. Install underhood electrical center bracket.
  11. Install underhood electrical center. Refer to «Underhood Electrical Center or Junction Block Replacement»(ref-365277-S40686588082010070600000)
  12. Install front bumper upper facia support. Refer to «Front Bumper Fascia Upper Support Replacement (Enclave)»(ref-365242-S33603536182010070600000) or «Front Bumper Fascia Upper Support Replacement (OUTLOOK, Acadia, Traverse)»(ref-365242-S40598505392010070600000)
  13. Install right engine mount strut. Refer to «Engine Mount Strut Replacement - Right Side»(ref-365266-S35897459922010070600000)
  14. Install injector sight shield.
  15. Evacuate and recharge the refrigerant system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  16. Leak test the fittings of the component using J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .

Scheme 2

Scheme 2: Air Conditioning (AC) Refrigerant Filter Replacement (Auxiliary)
Scheme 2: Air Conditioning (AC) Refrigerant Filter Replacement (Auxiliary)
CalloutComponent Name
Procedure: Remove the Auxiliary A/C Evaporator Tube. Refer to Auxiliary Air Conditioning Evaporator Tube Replacement
1Auxiliary A/C Refrigerant Filter.
  1. Remove the A/C suction hose from the A/C compressor. Refer to.
  2. Using a caliper that reads to 3 decimal places, measure the ID of the suction hose or manifold suction fitting. To determine the correct size screen for the application, refer to «Compressor Suction Screen and Tool Selection Specifications»(ref-365250-S12673025952010070600000) .
  3. Select and install the correct mandrel (1) on the threaded portion of the installation tool bolt: The brass Universal Mandrel is for use on hose fittings with a smooth bore where the screen installs flush with the end of the fitting. The 11.96 mm (0.471 in) Mandrel is only for the 11.96 mm (0.471 in) screen in hose fittings with an internal hourglass shape where the screen installs at the recessed, reduced diameter point.
  4. Install the 11.96 mm (0.471 in) screen in the middle of the reduced diameter point of the fitting.
  5. Place the suction hose fitting or suction hose side of the manifold into the installation tool fixture J-44551-5 (3) so it is supported by the tools legs.
  6. Lubricate the A/C suction screen with the applicable refrigerant oil.
  7. Align the screen (2), basket first; into the suction hose bore then hand tighten the bolt until contact is made between the hose, screen and tool.
  8. Turn the bolt of the installation tool clockwise pressing the screen into the bore until the mandrel shoulder contacts the end of the hose fitting.
  9. Unscrew the bolt and remove the installation tool from the hose or manifold.
  10. Install the J-44551-1 Suction Screen Notification Label.
  11. Install the A/C hose to the A/C compressor. Refer to «Suction Hose Replacement»(ref-365250-S12972015182010070600000) .
  1. Remove the A/C suction hose from the A/C compressor. Refer to «Suction Hose Replacement»(ref-365250-S12972015182010070600000) .
  2. Using the J-44551-9 Universal Removal Tool, place the tip of the tool under the inside edge of the compression band of the suction screen and the cushioning fulcrum pad against the open end of the hose or manifold fitting.
  3. Pry upward on the band and move the tool around the diameter of the screen as necessary to remove the screen.
  1. Using a caliper that reads to 3 decimal places, measure the ID of the suction hose or manifold suction fitting. To determine the correct size screen for the application, refer to «Compressor Suction Screen and Tool Selection Specifications»(ref-365250-S12673025952010070600000) .
  2. Select and install the correct mandrel (1) on the threaded portion of the installation tool bolt: The brass Universal Mandrel is for use on hose fittings with a smooth bore where the screen installs flush with the end of the fitting. The 11.96 mm (0.471 in) Mandrel is only for the 11.96 mm (0.471 in) screen in hose fittings with an internal hourglass shape where the screen installs at the recessed, reduced diameter point.
  3. Install the 11.96 mm (0.471 in) screen in the middle of the reduced diameter point of the fitting.
  4. Place the suction hose fitting or suction hose side of the manifold into the installation tool fixture J-44551-5 (3) so it is supported by the tools legs.
  5. Lubricate the A/C suction screen with the applicable refrigerant oil.
  6. Align the screen (2), basket first; into the suction hose bore then hand tighten the bolt until contact is made between the hose, screen and tool.
  7. Turn the bolt of the installation tool clockwise pressing the screen into the bore until the mandrel shoulder contacts the end of the hose fitting.
  8. Unscrew the bolt and remove the installation tool from the hose or manifold.
  9. Install the J-44551-1 Suction Screen Notification Label.
  10. Install the A/C hose to the A/C compressor. Refer to «Suction Hose Replacement»(ref-365250-S12972015182010070600000) .
  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Use J 46246 or equivalent to remove the valve core. See «Special Tools»(ref-365250-S10056360502010070600000) .
  1. Use J 46246 or equivalent to install and tighten the valve core. See «Special Tools»(ref-365250-S10056360502010070600000) .
  2. Evacuate and charge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  3. Test the affected A/C fittings for leaks using J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .

Scheme 3

Scheme 3: Air Conditioning Refrigerant Desiccant Replacement
Scheme 3: Air Conditioning Refrigerant Desiccant Replacement
CalloutComponent Name
Preliminary Procedure Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the Front Bumper Fascia. Refer to Front Bumper Fascia Replacement (Acadia) or Front Bumper Fascia Replacement (Enclave) or Front Bumper Fascia Replacement (OUTLOOK) or Front Bumper Fascia Replacement (Traverse) .
1Desiccant Cartridge Cap
2Desiccant Cartridge Snap Ring Procedure: Lightly tap inward on Desiccant Cartridge plug to gain clearance for snap ring removal.
3Desiccant Cartridge Plug Procedure: Insert a 5 mm screw into plug and pull outward for removal.
4Desiccant Cartridge Procedure: Use of pliers or vice grips may aid in cartridge removal.
  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-365256-S37977066062010070600000) .
  3. If equipped, remove the windshield washer solvent heater. Refer to «Windshield Washer Solvent Heater Replacement (Acadia, Enclave, OUTLOOK)»(ref-365237-S21885076172010070600000) or «Windshield Washer Solvent Heater Replacement (Traverse)»(ref-365237-S20623338162010070600000) .
  4. Remove the evaporator thermal expansion valve (TXV) tube from the TXV.
  5. Remove and discard the seal washers.
  6. Remove the TXV bolts.
  7. Remove the TXV.
  8. Remove and discard the seal washers.
  1. Install the TXV seal strip. The center of the seal strip should cover the dome at the top of the TXV and then down both sides of the TXV.
  2. Install new seal washers to the evaporator core fittings. Refer to «Air Conditioning System Seal Replacement»(ref-365250-S15870229332010070600000) .
  3. Install the TXV.
  4. Install the TXV bolts. Insert a small phillips screwdriver through one of the 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: Tighten the bolts to 5 N.m (44 lb in).
  5. Install new sealing washers on the evaporator TXV tube fittings. Refer to «Air Conditioning System Seal Replacement»(ref-365250-S15870229332010070600000) .
  6. Install the condenser tube and evaporator hose to the TXV.
  7. Install the TXV nut. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  8. Evacuate and charge the refrigerant system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  9. If removed, install the windshield washer solvent heater. Refer to «Windshield Washer Solvent Heater Replacement (Acadia, Enclave, OUTLOOK)»(ref-365237-S21885076172010070600000) or «Windshield Washer Solvent Heater Replacement (Traverse)»(ref-365237-S20623338162010070600000) .
  10. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement»(ref-365256-S37977066062010070600000) .
  11. Leak test the fittings using the J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .

Scheme 4

Scheme 4: Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
Scheme 4: Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
CalloutComponent Name
1Refrigerant Pressure Sensor. CAUTION: Refer to Fastener Caution . Procedure Hand start the refrigerant pressure sensor to the compressor hose, taking care not to pinch the O-ring and tighten. Remove electrical connector. Tighten: 4 N.m (35 lb in)
2O-ring Procedure: Lubricate the refrigerant pressure sensor O-ring with mineral oil.
CAUTION
Refer to Fastener Caution .

Scheme 5

Scheme 5: Evaporator Air Temperature Sensor Replacement
Scheme 5: 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 (Acadia) or Instrument Panel Insulator Panel Replacement - Right Side (Enclave) or Instrument Panel Insulator Panel Replacement - Right Side (OUTLOOK) or Instrument Panel Insulator Panel Replacement - Right Side (Traverse) .
1Evaporator Temperature Sensor Procedure Disconnect the sensor electrical connector. Apply downward pressure on sensor to release tabs for removal.

Scheme 6

Scheme 6: Air Conditioning Condenser Replacement (Acadia, Outlook, Traverse)
Scheme 6: Air Conditioning Condenser Replacement (Acadia, Outlook, Traverse)
CalloutComponent Name
Preliminary Procedure Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the front bumper fascia upper support. Refer to Front Bumper Fascia Upper Support Replacement (OUTLOOK, Acadia, Traverse) Remove the A/C discharge line at condenser. Refer to Discharge Hose Replacement . Remove the A/C liquid line at condenser. Refer to Air Conditioning Condenser and Air Conditioning Evaporator Tube Replacement . Pinch fastening tabs together at top of condenser and slide upward to remove.
1Condenser Assembly Tip: Bottom of condenser mounts into holding fixtures at bottom of radiator.

Air Conditioning Condenser Replacement (Enclave)

CalloutComponent Name
Preliminary Procedure Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the A/C discharge line at condenser. Refer to Discharge Hose Replacement . Remove the A/C liquid line at condenser. Refer to Air Conditioning Condenser and Air Conditioning Evaporator Tube Replacement . Pinch fastening tabs together at top of condenser and slide upward to remove.
1Condenser Assembly Tip: Bottom of condenser mounts into holding fixtures at bottom of radiator.

Scheme 7

Scheme 7: Air Conditioning and Heater Module Assembly Replacement
Scheme 7: Air Conditioning and Heater Module Assembly Replacement
CalloutComponent Name
Preliminary Procedure Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) or 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 .

Scheme 8

Scheme 8: Air Conditioning Evaporator Core Replacement
Scheme 8: Air Conditioning Evaporator Core Replacement
CalloutComponent Name
Preliminary Procedure Remove the HVAC Module. Refer to Air Conditioning and Heater Module Assembly Replacement . 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 Tip: Ensure all seals are in place upon installation.
CAUTION
Refer to Fastener Caution .

Scheme 9

Scheme 9: Air Conditioning Evaporator and Blower Module Drain Hose Replacement
Scheme 9: 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

Scheme 10

Scheme 10: Heater Inlet Hose Replacement
Scheme 10: Heater Inlet Hose Replacement
CalloutComponent Name
Preliminary Procedure: Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) or 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.

Scheme 11

Scheme 11: Heater Outlet Hose Replacement
Scheme 11: Heater Outlet Hose Replacement
CalloutComponent Name
Preliminary Procedure: Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) or 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.

Scheme 12

Scheme 12: Heater Core Tube Replacement
Scheme 12: Heater Core Tube Replacement
CalloutComponent Name
Preliminary Procedure Drain the coolant. Refer to Cooling System Draining and Filling (Static Fill) or 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.

Scheme 13

Scheme 13: Air Inlet Screen Cleaning
Scheme 13: 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.

Scheme 14

Scheme 14: Passenger Compartment Air Filter Housing Replacement
Scheme 14: Passenger Compartment Air Filter Housing Replacement
CalloutComponent Name
Preliminary Procedure: Remove the instrument panel compartment. Refer to Instrument Panel Compartment Replacement (Acadia) or Instrument Panel Compartment Replacement (Enclave) or Instrument Panel Compartment Replacement (OUTLOOK) or Instrument Panel Compartment Replacement (Traverse)
1Passenger Compartment Air Filter Housing Cover Procedure: Squeeze the housing cover tabs for removal. Tip: Ensure seals are in place upon installation.
2Passenger Compartment Air Filter Housing

Scheme 15

Scheme 15: Blower Motor Control Module Replacement
Scheme 15: Blower Motor Control Module Replacement
CalloutComponent Name
Preliminary Procedure: Remove the instrument panel insulator - right side. Refer to Instrument Panel Insulator Panel Replacement - Right Side (Acadia) or Instrument Panel Insulator Panel Replacement - Right Side (Enclave) or Instrument Panel Insulator Panel Replacement - Right Side (OUTLOOK) or Instrument Panel Insulator Panel Replacement - Right Side (Traverse) .
1Blower Motor Control Module Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
2Blower Motor Control Module Procedure: Disconnect electrical connectors.
CAUTION
Refer to Fastener Caution .

Scheme 16

Scheme 16: Blower Motor Replacement
Scheme 16: Blower Motor Replacement
CalloutComponent Name
Preliminary Procedure: Remove the instrument panel insulator - right side. Refer to Instrument Panel Insulator Panel Replacement - Right Side (Acadia) or Instrument Panel Insulator Panel Replacement - Right Side (Enclave) or Instrument Panel Insulator Panel Replacement - Right Side (OUTLOOK) or Instrument Panel Insulator Panel Replacement - Right Side (Traverse) .
1Blower Motor Screw CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
2Blower Motor Procedure Disconnect the electrical connectors. Rotate the blower motor counterclockwise to remove.
CAUTION
Refer to Fastener Caution .

Scheme 17

Scheme 17: Side Window Defogger Outlet Grille Replacement - Left Side (Enclave)
Scheme 17: Side Window Defogger Outlet Grille Replacement - Left Side (Enclave)
CalloutComponent Name
1Left Instrument Panel Trim Panel. Refer to Instrument Panel Trim Panel Replacement - Left Side (Enclave) .
2Instrument Panel Left Window Air Outlet Procedure: Release the tab on the air outlet from the underside of the trim panel and push the air outlet upward out of the trim panel.

Scheme 18

Scheme 18: Side Window Defogger Outlet Grille Replacement - Left Side (Traverse)
Scheme 18: Side Window Defogger Outlet Grille Replacement - Left Side (Traverse)
CalloutComponent Name
Preliminary Procedure: Remove the left instrument panel air outlet assembly. Refer to Instrument Panel Outer Air Outlet Replacement - Left Side (Traverse) .
1Pal Nuts (Qty: 3) Procedure: Tighten the pal nuts until fully seated but not stripped
2Side Window Defroster Outlet Duct Assembly
3Side Window Defroster Outlet Grille Assembly

Scheme 19

Scheme 19: Side Window Defogger Outlet Grille Replacement - Right Side (Enclave)
Scheme 19: Side Window Defogger Outlet Grille Replacement - Right Side (Enclave)
CalloutComponent Name
1Instrument Panel Trim Pad Refer to Instrument Panel Trim Pad Replacement (Enclave) .
2Instrument Panel Right Window Air Outlet Screw (Qty: 1) CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
3Instrument Panel Right Window Air Outlet Procedure: Release the tab on the air outlet from the underside of the trim pad and push the air outlet upward out of the trim pad.
CAUTION
Refer to Fastener Caution .

Scheme 20

Scheme 20: Side Window Defogger Outlet Grille Replacement - Right Side (Traverse)
Scheme 20: Side Window Defogger Outlet Grille Replacement - Right Side (Traverse)
CalloutComponent Name
Preliminary Procedure: Remove the right instrument panel air outlet assembly. Refer to Instrument Panel Outer Air Outlet Replacement - Right Side (Traverse) .
1Pal Nuts (Qty: 3) Procedure: Tighten the pal nuts until fully seated but not stripped
2Side Window Defroster Outlet Duct Assembly
3Side Window Defroster Outlet Grille Assembly

Scheme 21

Scheme 21: Air Distributor Case Replacement
Scheme 21: Air Distributor Case Replacement
CalloutComponent Name
Preliminary Procedure Remove the HVAC module. Refer to Air Conditioning and Heater Module Assembly Replacement . Reposition any wiring harnesses before removal.
1Air Distribution Case Screw Qty: (2) CAUTION: Refer to Fastener Caution . Tighten: 3 N.m (27 lb in)
2Air Distribution Case Procedure Prior to removing the air distribution case, note the routing of the wiring to ensure proper reinstallation. Disconnect all electrical connections. When replacing the air distribution case, transfer all necessary components. If the recirculation actuator is removed or the wiring harness disconnected, the actuator must be re-calibrated. Refer to Actuator Recalibration .
CAUTION
Refer to Fastener Caution .

Scheme 22

Scheme 22: Side Window Air Outlet Replacement (Acadia)
Scheme 22: Side Window Air Outlet Replacement (Acadia)
CalloutComponent Name
1Side Window Air Outlet Assembly Procedure: Use a flat bladed plastic trim tool to release the air outlet from the instrument panel.

Scheme 23

Scheme 23: Instrument Panel Outer Air Outlet Replacement - Left Side (Acadia)
Scheme 23: 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) or 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 Left Air Outlet Assembly

Scheme 24

Scheme 24: Instrument Panel Outer Air Outlet Replacement - Left Side (Enclave)
Scheme 24: Instrument Panel Outer Air Outlet Replacement - Left Side (Enclave)
CalloutComponent Name
1Left Instrument Panel Trim Panel. Refer to Instrument Panel Trim Panel Replacement - Left Side (Enclave) .
2Instrument Panel Left Air Outlet Procedure: Unsnap the air outlet from the back side of the trim panel and push the air outlet forward out of the trim panel.

Scheme 25

Scheme 25: Instrument Panel Outer Air Outlet Replacement - Left Side (Traverse)
Scheme 25: 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 Left Air Outlet Assembly

Scheme 26

Scheme 26: Instrument Panel Center Air Outlet Replacement (Acadia)
Scheme 26: Instrument Panel Center Air Outlet Replacement (Acadia)
CalloutComponent Name
1Instrument Panel Accessory Trim Plate Refer to Instrument Panel Accessory Trim Plate Replacement (Acadia) .
2Instrument Panel Center Air Outlet Screw (Qty: 5) CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
3Instrument Panel Center Air Outlet Assembly
CAUTION
Refer to Fastener Caution .

Scheme 27

Scheme 27: Instrument Panel Center Air Outlet Replacement (Enclave)
Scheme 27: Instrument Panel Center Air Outlet Replacement (Enclave)
CalloutComponent Name
1Instrument Panel Trim Panel - Center Refer to Instrument Panel Center Trim Panel Replacement (Enclave) .
2Instrument Panel Center Air Outlet Procedure: Unsnap the air outlet from the trim panel.

Scheme 28

Scheme 28: Instrument Panel Center Air Outlet Replacement (Traverse)
Scheme 28: Instrument Panel Center Air Outlet Replacement (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 Center Air Outlet Assembly

Scheme 29

Scheme 29: Instrument Panel Outer Air Outlet Replacement - Right Side (Acadia)
Scheme 29: 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) or 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 Right Air Outlet Assembly

Scheme 30

Scheme 30: Instrument Panel Outer Air Outlet Replacement - Right Side (Enclave)
Scheme 30: 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 Right Air Outlet Procedure: Unsnap the air outlet from the back side of the trim panel and push the air outlet forward out of the trim panel.

Scheme 31

Scheme 31: Instrument Panel Outer Air Outlet Replacement - Right Side (Traverse)
Scheme 31: 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 Right Air Outlet Assembly

Scheme 32

Scheme 32: Floor Air Outlet Duct Replacement - Left Side
Scheme 32: Floor Air Outlet Duct Replacement - Left Side
CalloutComponent Name
1Heater Outlet Duct Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
2Heater Outlet Duct
CAUTION
Refer to Fastener Caution .

Scheme 33

Scheme 33: Windshield Defroster Duct Replacement
Scheme 33: 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) or Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) or Instrument Panel Trim Pad Replacement (Enclave) or Instrument Panel Trim Pad Replacement (OUTLOOK) or 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 .

Scheme 34

Scheme 34: Side Window Defogger Outlet Duct Replacement - Left Side
Scheme 34: 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 .

Scheme 35

Scheme 35: Side Window Defogger Outlet Duct Replacement - Right Side
Scheme 35: 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) or Instrument Panel Trim Pad Replacement (Acadia w/o RPO UV6) or Instrument Panel Trim Pad Replacement (Enclave) or Instrument Panel Trim Pad Replacement (OUTLOOK) or 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 .

Floor Air Outlet Duct Replacement - Right Side

CalloutComponent Name
1Heater Outlet Duct Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
2Heater Outlet Duct
CAUTION
Refer to Fastener Caution .

Scheme 36

Scheme 36: Rear Floor Auxiliary Air Outlet Duct Replacement
Scheme 36: Rear Floor Auxiliary Air Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedures Remove the Front Floor Console. Refer to Front Floor Console Replacement (Acadia) or Front Floor Console Replacement (Enclave) or Front Floor Console Replacement (OUTLOOK) or Front Floor Console Replacement (Traverse) . Remove the Rear Floor Console. Refer to Rear Floor Console Replacement . Remove the Rear Floor Carpet. Refer to Rear Floor Panel Carpet Replacement .
1Floor Air Outlet Duct Fastener CAUTION: Refer to Fastener Caution .
2Floor Air Outlet Duct
CAUTION
Refer to Fastener Caution .

Scheme 37

Scheme 37: Heater Core Cover Replacement
Scheme 37: Heater Core Cover Replacement
CalloutComponent Name
Preliminary Procedure Remove left front floor console extension panel. Remove 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 .

Scheme 38

Scheme 38: Heater Core Replacement
Scheme 38: 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.
  1. Drain the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-365258-S42715675352010070600000) or «Cooling System Draining and Filling (Vac N Fill)»(ref-365258-S15415891712010070600000) .
  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.
  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-365258-S42715675352010070600000) or «Cooling System Draining and Filling (Vac N Fill)»(ref-365258-S15415891712010070600000) .

Scheme 39

Scheme 39: Auxiliary Blower Control Module Replacement
Scheme 39: Auxiliary Blower Control Module Replacement
CalloutComponent Name
Preliminary Procedures Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB4) or Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB5) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) . 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 .

Scheme 40

Scheme 40: Auxiliary Blower Motor Replacement
Scheme 40: Auxiliary Blower Motor Replacement
CalloutComponent Name
Preliminary Procedures Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB4) or Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB5) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) . Disconnect the blower motor electrical connector.
1Blower Motor Tab Retaining Screw (Qty: 3)
2Blower Motor Assembly

Scheme 41

Scheme 41: Auxiliary Heater Air Outlet Duct Replacement
Scheme 41: 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 (Acadia/OUTLOOK with TB4) or Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB5) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) . Remove the upper air temperature sensor, if equipped.
1Air Distribution Duct Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
2Lower Air Distribution Duct Procedure: Squeeze both ends of distribution duct to release for removal.
CAUTION
Refer to Fastener Caution .

Scheme 42

Scheme 42: Auxiliary Air Conditioning Air Outlet Duct Replacement
Scheme 42: 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 (Acadia/OUTLOOK with TB4) or Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB5) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB4) or Quarter Lower Rear Trim Panel Replacement (Enclave with TB5) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB4) or Quarter Lower Rear Trim Panel Replacement (Traverse with TB5) . Remove the upper air temperature sensor, if equipped.
1Air Distribution Duct Bolt CAUTION: Refer to Fastener Caution . Tighten: 2 N.m (18 lb in)
2Upper Air Distribution Duct Procedure: Squeeze both ends of distribution duct to release for removal.
CAUTION
Refer to Fastener Caution .

Scheme 43

Scheme 43: Auxiliary Heater Core Replacement
Scheme 43: Auxiliary Heater Core Replacement
CalloutComponent Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to Auxiliary HVAC Module Replacement . 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 .

Scheme 44

Scheme 44: Auxiliary Heater Core Tube Replacement
Scheme 44: 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

Scheme 45

Scheme 45: Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement
Scheme 45: 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 .
1Thermal Expansion Valve Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Tip: 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 N.m (44 lb in)
2Sealing Washer Tip: Remove and discard the sealing washer. Refer to Air Conditioning System Seal Replacement .
3Thermal 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 (Auxiliary) .
CAUTION
Refer to Fastener Caution .
  1. Recover the refrigerant from the air conditioning (A/C) system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Drain the engine coolant. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-365258-S42715675352010070600000) or «Cooling System Draining and Filling (Vac N Fill)»(ref-365258-S15415891712010070600000) .
  3. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-365243-S07204316382010070600000) .
  4. Remove the right rear wheelhouse liner panel. Refer to «Rear Wheelhouse Panel Liner Replacement»(ref-365238-S12157786772010070600000) .
  5. Disconnect the heater lines (2, 3) from the auxiliary HVAC module at the underside of the vehicle.
  6. Disconnect the air conditioning lines (4, 5) from the auxiliary HVAC module at the underside of the vehicle.
  7. Remove the nuts (6) from the studs (1) that secure the auxiliary HVAC module to the underside of the vehicle.
  8. Lower the vehicle.
  9. Remove the right rear quarter trim panel. Refer to «Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB4)»(ref-365235-S18214398872010070600000) or «Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB5)»(ref-365235-S37351610142010070600000) or «Quarter Lower Rear Trim Panel Replacement (Enclave with TB4)»(ref-365235-S30376944132010070600000) or «Quarter Lower Rear Trim Panel Replacement (Enclave with TB5)»(ref-365235-S39852234872010070600000) or «Quarter Lower Rear Trim Panel Replacement (Traverse with TB4)»(ref-365235-S40361858632010070600000) or «Quarter Lower Rear Trim Panel Replacement (Traverse with TB5)»(ref-365235-S14923637482010070600000) .
  10. Disconnect the electrical connectors from the auxiliary HVAC module.
  11. Remove the upper auxiliary air distributor duct (2). Refer to «Auxiliary Air Conditioning Air Outlet Duct Replacement»(ref-365250-S32494780722010070600000) .
  12. Remove the lower auxiliary air distributor duct (2). Refer to «Auxiliary Heater Air Outlet Duct Replacement»(ref-365250-S36804921322010070600000) .
  13. Remove the fasteners (3) retaining the auxiliary HVAC module to the vehicle.
  14. 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.
  3. Install the upper auxiliary air distributor duct. Refer to «Auxiliary Air Conditioning Air Outlet Duct Replacement»(ref-365250-S32494780722010070600000) .
  4. Install the lower auxiliary air distributor duct. Refer to «Auxiliary Heater Air Outlet Duct Replacement»(ref-365250-S36804921322010070600000) .
  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 (Acadia/OUTLOOK with TB4)»(ref-365235-S18214398872010070600000) or «Quarter Lower Rear Trim Panel Replacement (Acadia/OUTLOOK with TB5)»(ref-365235-S37351610142010070600000) or «Quarter Lower Rear Trim Panel Replacement (Enclave with TB4)»(ref-365235-S30376944132010070600000) or «Quarter Lower Rear Trim Panel Replacement (Enclave with TB5)»(ref-365235-S39852234872010070600000) or «Quarter Lower Rear Trim Panel Replacement (Traverse with TB4)»(ref-365235-S40361858632010070600000) or «Quarter Lower Rear Trim Panel Replacement (Traverse with TB5)»(ref-365235-S14923637482010070600000) .
  7. Raise the vehicle.
  8. Install the nuts that secure the auxiliary HVAC module to the vehicle. CAUTION: Refer to «Fastener Caution»(ref-365236-S10869706582010070600000) . Tighten: Tighten the nuts to 9 N.m (80 lb in).
  9. Install the air conditioning lines (4, 5) and the nut (6) to the auxiliary HVAC module. Tighten: Tighten the nut to 16 N.m (12 lb ft).
  10. Install the heater lines (2, 3) to the auxiliary HVAC module at the underside of vehicle.
  11. Install the right rear wheelhouse liner panel. Refer to «Rear Wheelhouse Panel Liner Replacement»(ref-365238-S12157786772010070600000) .
  12. Lower the vehicle.
  13. Fill the engine coolant. Refer to «Cooling System Draining and Filling (Static Fill)»(ref-365258-S42715675352010070600000) or «Cooling System Draining and Filling (Vac N Fill)»(ref-365258-S15415891712010070600000) .
  14. Recharge the refrigerant to the system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  15. Leak test the fittings of the component using the J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .

Scheme 46

Scheme 46: Auxiliary Air Conditioning Evaporator Replacement
Scheme 46: Auxiliary Air Conditioning Evaporator Replacement
CalloutComponent Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to Auxiliary HVAC Module Replacement . 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 .
  1. Recover the refrigerant from the system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  2. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-365243-S07204316382010070600000) .
  3. Remove the right rear inner wheelhouse liner if necessary. Refer to «Rear Wheelhouse Panel Liner Replacement»(ref-365238-S12157786772010070600000) .
  4. Remove auxiliary evaporator tube nut (1) and pull downward to release the auxiliary A/C evaporator tubes (2) from the auxiliary HVAC module (4).
  5. Remove auxiliary evaporator tube clip nuts (3) and release tubes from clips.
  6. Remove air cleaner duct. «Air Cleaner Outlet Duct Replacement»(ref-365256-S37977066062010070600000) .
  7. Remove the retaining nuts (1) and the auxiliary A/C evaporator tubes (2) from the TXV tube and condenser tube.
  8. Remove the heater/A/C tubes retaining nuts (1) from the retaining studs and clips along the frame in four places.
  9. Remove the auxiliary A/C evaporator tubes (3) from the clamps (2).
  10. Remove the auxiliary A/C 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 A/C evaporator tubes to the vehicle.
  2. Install the auxiliary A/C evaporator tubes (3) to the clamps (2).
  3. Install the heater/A/C tubes retaining nut (1) to the retaining studs and clips (2) along the frame in four places. Tighten: Tighten the nut to 7 N.m (62 lb in).
  4. Install the auxiliary A/C evaporator tubes (2) to the TXV tube and condenser tube and install the retaining nuts (1). Tighten: Tighten the nut to 16 N.m (12 lb ft).
  5. Install air cleaner duct. «Air Cleaner Outlet Duct Replacement»(ref-365256-S37977066062010070600000) .
  6. Install the auxiliary A/C evaporator tubes (2) to the HVAC module (4) and install retaining nut (1). Tighten: Tighten the nuts to 16 N.m (12 lb ft).
  7. Install auxiliary evaporator tubes to retaining clips and install nuts (3) to secure. Tighten: Tighten the nuts to 4 N.m (35 lb in).
  8. Install the right rear inner wheelhouse liner if necessary. Refer to «Rear Wheelhouse Panel Liner Replacement»(ref-365238-S12157786772010070600000) .
  9. Lower the vehicle.
  10. Recharge the refrigerant to the system. Refer to «Refrigerant Recovery and Recharging»(ref-365250-S31567954842010070600000) .
  11. Leak test the fittings of the component using the J 39400-A . See «Special Tools»(ref-365250-S10056360502010070600000) .

More articles — Heating, Ventilation and Air Conditioning