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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Compressor Replacement (LS4) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the drive belt. Refer to Drive Belt Replacement - Accessory .
  3. Remove the lower radiator air baffle and deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement .
  4. Fig 1: Locating A/C Compressor Electrical Connector
    GM1548455Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the A/C compressor electrical connector.
  6. Fig 2: Locating A/C Compressor Hose Nut
    GM1548415Courtesy of GENERAL MOTORS CORP.
  7. Remove the A/C compressor hose nut from the A/C compressor.
  8. Fig 3: View Of A/C Compressor Hose At A/C Compressor
    GM1548414Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Remove and discard all sealing washers.
  9. Remove the A/C compressor hose from the A/C compressor.
  10. Fig 4: View Of Stud At A/C Compressor
    GM1548471Courtesy of GENERAL MOTORS CORP.
  11. Remove the stud from the A/C compressor.
  12. Fig 5: Identifying Rear Mounting Bolt At A/C Compressor
    GM1548417Courtesy of GENERAL MOTORS CORP.
  13. Loosen the rear mounting bolt from the A/C compressor.
  14. Fig 6: View Of Front Mounting Bolt At A/C Compressor
    GM1548416Courtesy of GENERAL MOTORS CORP.
  15. Remove the front mounting bolt from the A/C compressor.
  16. Remove the front mounting nut from the A/C compressor.
  17. Remove the front A/C compressor mounting stud.
  18. Install a floor stand under the right front cradle.
  19. Loosen the right front cradle bolt and lower the cradle.
  20. Remove the A/C compressor.
  21. IMPORTANT: Replacement compressors are shipped with polyalkylene glycol (PAG) oil.
  22. If replacing the compressor, balance the compressor oil. Refer to Compressor Oil Balancing .