GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Cooling 🢒 Air Conditioning Compressor Replacement

Removal Procedure
  1. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls.

    2. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  2. Disconnect the negative battery cable.
  3. Discharge and recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging
  4. Disconnect the electrical connectors.
  5. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  6. Remove the drive belt.
  7. Remove the oil filler tube.
  8. Remove the compressor and condenser hose assembly. Refer to Auxiliary Air Conditioning Compressor and Condenser Hose Replacement .

    9. Object Number: 280385 Size: SH
  9. Remove the compressor brace bolts and the nuts.
  10. Remove the compressor brace.
  11. Remove the compressor bolts.
  12. Remove the compressor.
  13. Drain and measure the compressor oil.

Installation Procedure
  1. Install the compressor.

    2. Object Number: 280385 Size: SH

    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 compressor bolts.

    3. Tighten
    Tighten the compressor bolts to 50 N·m (37 lb ft).

  3. Install the compressor braces.
  4. Install the compressor brace bolts.

    5. Tighten

        • Tighten the bolt at the compressor to 50 N·m (37 lb ft).
        • Tighten the bolt at the generator bracket to 25 N·m (18 lb ft).
  5. Install the compressor and condenser hose assembly. Refer to Auxiliary Air Conditioning Compressor and Condenser Hose Replacement .
  6. Install the oil filler tube.
  7. Install the drive belt.
  8. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  9. Connect the electrical connectors.

    10. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  10. Connect the negative battery cable.
  11. Evacuate and charge the system. Refer to Refrigerant Recovery and Recharging
  12. Ensure that no leaks exist in the system.
  13. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls.