GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-3.4L or Air Cleaner Assembly Replacement in Engine Controls-3.8L.

  3. Object Number: 540892  Size: SH
  4. Loosen the suction hose nut at the accumulator.
  5. Remove the suction hose from the accumulator.

  6. Object Number: 540914  Size: SH
  7. Loosen the A/C compressor hose nut from the accumulator.
  8. Remove the A/C compressor hose from the accumulator.

  9. Object Number: 379841  Size: SH
  10. Remove the accumulator bracket bolt.
  11. Remove the accumulator.

Installation Procedure

  1. If replacing the accumulator, add refrigerant oil to the accumulator. Refer to Refrigerant System Capacities for system capacity information.

  2. Object Number: 379841  Size: SH
  3. Install the accumulator.
  4. 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.

  5. Install the accumulator bracket bolt.
  6. Tighten
    Tighten the bolt to 4 N·m (36 lb in).

  7. Install new O-ring seals onto the A/C compressor hose and the suction hose. Refer to O-Ring Replacement .

  8. Object Number: 540914  Size: SH
  9. Install the A/C compressor hose to the accumulator.
  10. Install the A/C compressor hose nut to the accumulator.
  11. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 540892  Size: SH
  12. Connect the suction hose to the accumulator
  13. Tighten the suction hose nut.
  14. Tighten
    Tighten the nut to 47 N·m (35 lb ft).

  15. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-3.4L or Air Cleaner Assembly Replacement in Engine Controls-3.8L.
  16. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  17. Leak test the fittings of the component using J 39400-A .