H3 2006

Removal & Installation

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3.5L & 3.7L Engines



Specific to:

Hummer H3 2006-2010

  1. Recover the Air Conditioner (A/C) refrigerant.
  2.  
  3. Remove the drive belt.
  4.  
  5. Remove the cooling fan and shroud.
  6.  
  7. Disconnect the A/C compressor electrical connector.
  8.  
  9. Remove the left front tire.
  10.  
  11. Remove the left front wheelhouse panel.
    CAUTION
    Some system pressure may still exist in the A/C compressor crankcase after you evacuate the system.

  12.  
  13. Remove the A/C discharge hose bolt from the A/C compressor.

    Click image to see an enlarged view

    Fig. Remove the A/C discharge hose bolt from the A/C compressor

  14.  
  15. Remove the A/C suction hose bolt from the compressor.
  16.  
  17. Remove the A/C compressor hoses from the A/C compressor.
  18.  
  19. Remove and discard the sealing washers.
  20.  
  21. Remove the A/C compressor mounting bolts from the A/C compressor.

    Click image to see an enlarged view

    Fig. Remove the A/C compressor mounting bolts from the A/C compressor

  22.  
  23. Remove the A/C compressor from the vehicle.
  24.  
  25. Drain and measure the A/C compressor oil.
  26.  

To install:

  1. Adjust the proper amount of oil to the replacement compressor.
  2.  
  3. Install A/C the compressor to the vehicle.
  4.  
  5. Install the A/C compressor mounting bolts. Tighten the bolts to 37 ft. lbs. (50 Nm).
  6.  
  7. Install new sealing washers to the A/C hoses.
  8.  
  9. Install the A/C compressor hoses to the A/C compressor.
  10.  
  11. Install the A/C suction hose bolt.
  12.  
  13. Install the A/C discharge hose bolt. Tighten the bolts to 24 ft. lbs. (33 Nm).
  14.  
  15. Connect the compressor electrical connectors.
  16.  
  17. Install the cooling fan and shroud.
  18.  
  19. Install the drive belt.
  20.  
  21. Install the left front wheelhouse liner.
  22.  
  23. Install the left front tire.
  24.  
  25. Evacuate and recharge the A/C system.
  26.  
  27. Using J 39400-A leak test the fittings.
  28.  

5.3L Engine



Specific to:

Hummer H3 2006-2010

  1. Recover the refrigerant.
  2.  
  3. Remove the drive belt.
  4.  
  5. Raise and support the vehicle.
  6.  
  7. Remove the right front wheelhouse panel.
  8.  
  9. Remove the A/C drive belt.
  10.  
  11. Remove the electronic locking differential electrical connector and electrical harness bracket from the right frame rail and reposition.

    Click image to see an enlarged view

    Fig. Remove the electronic locking differential electrical connector (1) and electrical harness bracket (2) from the right frame rail and reposition

  12.  
  13. Disconnect the A/C compressor electrical connector.
  14.  
  15. Remove compressor hoses.
  16.  
  17. Remove all right side body mount frame cushion bolts.

    Click image to see an enlarged view

    Fig. Remove all right side body mount frame cushion bolts

  18.  
  19. Slowly lift the right (passenger) side of the body 1 1 / 4 inches off the frame and support.

    Click image to see an enlarged view

    Fig. Lift the right (passenger) side of the body 1 1/4 inches off the frame and support

  20.  
  21. Remove compressor mount bolts.

    Click image to see an enlarged view

    Fig. Remove compressor (2) mount bolts (1)

  22.  
  23. Rotate compressor and remove by backing assembly out between the frame rail and body.

    Click image to see an enlarged view

    Fig. Rotate compressor and remove by backing assembly out between the frame rail and body

  24.  

To install:

  1. Rotate compressor and install by positing assembly in between the frame rail and body.
  2.  
  3. Install the compressor mount bolts. Tighten the bolts to 37 ft. lbs. (50 Nm).
  4.  
  5. Slowly lower the right (passenger) side of the body on to the frame.
    NOTE
    Body mounts/bolts must be reinstalled in their original position.

  6.  
  7. Install all right side body mount frame cushion bolts. Tighten to 85 ft. lbs. (115 Nm).
  8.  
  9. Install the compressor hoses.
  10.  
  11. Connect the A/C compressor electrical connector.
  12.  
  13. Install the electronic locking differential electrical connector and electrical harness bracket from the right frame rail and reposition.
  14.  
  15. Install the A/C drive belt.
  16.  
  17. Install the right front wheelhouse panel.
  18.  
  19. Lower the vehicle.
  20.  
  21. Install the drive belt.
  22.  
  23. Evacuate and recharge the A/C system.
  24.  

 
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