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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 677 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Compressor Replacement (LR4, LM7, LQ4, L18 w/Denso) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant. Refer to Refrigerant Recovery & Recharging .
  2. Install a ratchet into the air conditioning (A/C) belt tensioner adapter opening.
    3. Fig 1: Belt Tensioner
    G01666437Courtesy of GENERAL MOTORS CORP.
  3. Rotate the A/C belt tensioner clockwise in order to relieve the tension on the belt.
  4. Remove the A/C belt from the A/C compressor.
  5. Slowly release the tension on the A/C belt tensioner.
  6. Remove the right front tire and wheel assembly.
  7. Remove the wheel house panel from the vehicle.
  8. Remove the discharge hose bolt from the A/C compressor.
  9. Remove the discharge hose from the A/C compressor.
  10. Remove the suction hose bolt from the A/C compressor.
  11. Remove the suction hose from the A/C compressor.
  12. Discard the sealing washers. Cap all of the openings.
  13. Disconnect the electrical connections.
  14. Remove the A/C compressor mounting bolts. The lower right bolt (3) will stay with the compressor due to a lack of clearance.
    15. Fig 2: A/C Compressor
    G01666438Courtesy of GENERAL MOTORS CORP.
  15. Remove the A/C compressor (2) from the bracket (1).
  16. If replacing the A/C compressor, drain and measure as much of the oil as possible from the removed compressor.
    1. 16.1. Drain the oil from both the suction and discharge ports of the removed A/C compressor into a clean container.
    2. 16.1. Measure and record the amount of oil drained from the removed A/C compressor. This measurement will be used during installation of the replacement A/C compressor.
    3. 16.3. Properly discard the used PAG oil.
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