GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 39500-B A/C Refrigerant Recovery, Recycling and Recharging (ACR4) System


    Object Number: 583971  Size: SH
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Remove the evaporator A/C compressor hose clip.

  4. Object Number: 583989  Size: SH
  5. Remove the A/C compressor hose from the accumulator.

  6. Object Number: 583858  Size: SH
  7. Disconnect the A/C hose retaining clip (1) at the rail.

  8. Object Number: 247310  Size: SH
  9. Remove the A/C compressor hose from the condenser.

  10. Object Number: 247288  Size: SH
  11. Disconnect the electrical connector from the A/C pressure sensor.
  12. Remove the nut that attaches the A/C compressor hose to the A/C compressor.
  13. Remove the A/C compressor hose from the vehicle.

Installation Procedure

Tools Required

J 39400 Electronic Halogen Leak Detector


    Object Number: 247288  Size: SH
  1. Install the A/C compressor hose to the vehicle.
  2. Important: Inspect the seal washers for damage before reinstalling the A/C lines and hoses.

    If any damage is noted during inspection, the suspect seal must be replaced.

    Flat washer type seals do not require lubrication.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the nut to attach the A/C compressor hose to the A/C compressor.
  4. Tighten
    Tighten the nut to 30 N·m (22 lb ft).

  5. Connect the electrical connector to the A/C pressure switch.

  6. Object Number: 247310  Size: SH
  7. Install the A/C compressor hose to the condenser.
  8. Tighten
    Tighten the condenser connection to 24 N·m (18 lb ft).

  9. Install the A/C compressor hose into the clip on the rail and fasten.
  10. Important: Inspect the seal washers for damage before reinstalling the A/C lines and hoses.

    If any damage is noted during inspection, the suspect seal must be replaced.

    Flat washer type seals do not require lubrication.


    Object Number: 583989  Size: SH
  11. Install the A/C compressor hose to the accumulator.
  12. Tighten
    Tighten the accumulator connection to 24 N·m (18 lb ft).


    Object Number: 583971  Size: SH
  13. Install the upper A/C compressor hose clip.
  14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  15. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  16. Test the A/C system for leaks using the J 39400 . Refer to Leak Testing .