GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Accumulator Tube Replacement - Auxiliary Side

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

    2. Object Number: 280459 Size: SH
  2. Discharge and recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging
  3. Remove the auxiliary evaporator outlet side tube (3) from the rear tube.
  4. Remove the O-ring seal.

    5. Object Number: 280427 Size: SH
  5. Remove the auxiliary evaporator outlet side tube from the compressor and the condenser hose assembly.
  6. Remove the O-ring seal.

    7. Object Number: 280459 Size: SH
  7. Remove the bolts (1) that retain the clips on the outlet side tube (3) to the body.
  8. Remove the auxiliary evaporator side tube (3) from the vehicle.

Installation Procedure

    Object Number: 280459 Size: SH
  1. Install the auxiliary evaporator outlet side tube (3) to the vehicle.

    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 bolts (1) that retain the clips on the outlet side tube (3) to the body.

    3. Tighten
    Tighten the bolts that retain the clips on the outlet side tube (3) to the body to 5 N·m (44 lb in).

  3. Install the new O-ring seal.

    4. Coat the O-ring seal with 525 viscosity refrigerant oil.


    Object Number: 280427 Size: SH
  4. Install the auxiliary evaporator outlet side tube to the compressor and the condenser hose assembly.

    5. Tighten
    Tighten the fitting to 47.5 N·m (35 lb ft).

  5. Install the new O-ring seal.

    6. Coat the O-ring seal with 525 viscosity refrigerant oil.


    Object Number: 280459 Size: SH
  6. Install the auxiliary evaporator outlet underside body tube (3) to the auxiliary evaporator rear tube.

    7. Tighten
    Tighten the fitting to 47.5 N·m (35 lb ft).

  7. Evacuate and charge the system. Refer to Refrigerant Recovery and Recharging
  8. Ensure that no leaks exist in the system.
  9. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls.