GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Air Conditioning Accumulator Replacement

Removal Procedure
  1. Recover the refrigerant. Refer toRefrigerant Recovery and Recharging .
  2. Disconnect the electrical connection at the pressure cycling switch.

    3. Object Number: 385463 Size: SH
  3. Disconnect the evaporator pipe at the evaporator.

    4. Object Number: 363139 Size: SH
  4. Disconnect the compressor/condenser hose at the accumulator.

    5. Object Number: 363054 Size: SH
  5. Remove the nut at the accumulator/evaporator connection.
  6. Remove the accumulator mounting bracket nut.
  7. Remove the accumulator.
  8. Discard all of the used sealing washers. Cap all openings.

Installation Procedure

    Object Number: 363054 Size: SH
  1. Install the accumulator using new sealing washers.

    2. 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.

  2. Install the nut to the accumulator.

    3. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  3. Install the accumulator mounting bracket nut.

    4. Tighten
    Tighten the nut to 9 N·m (80 lb in).


    Object Number: 385463 Size: SH
  4. Connect the evaporator pipe to the evaporator.

    5. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 363139 Size: SH
  5. Connect the compressor hose at the accumulator.

    6. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  6. Connect the electrical connection to the pressure cycling switch.
  7. Recharge the air conditioning system. Refer toRefrigerant Recovery and Recharging .
  8. Inspect the system for leaks. Refer to Leak Testing