GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Intrigue 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Evaporator Tube Replacement

Removal Procedure
  1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the brake modulator/master cylinder. Refer to Brake Modulator/Master Cylinder Assembly Replacement in Antilock Brake System.
  4. Remove the liquid line/suction line bracket.

    5. Object Number: 284638 Size: SH
  5. Remove the liquid line fitting at the orifice.

    6. Object Number: 284638 Size: SH
  6. Remove the liquid line at the block fitting.

    7. Important: Use care when removing the tube line.

  7. Remove the liquid line.
  8. Remove the O-rings and discard.

Installation Procedure

    Important: The new O-ring seals must be coated with mineral base 525 viscosity refrigerant oil.

  1. Install the new O-ring seals on to the liquid line. Refer toO-Ring Replacement .
  2. Install the liquid line into place.

    3. Object Number: 284638 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.

  3. Install the liquid line at the block fitting.

    4. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).


    Object Number: 284638 Size: SH
  4. Install the liquid line fitting at the orifice.

    5. Tighten
    Tighten the fitting to 27 N·m (20 lb ft).

  5. Install the liquid line/suction line bracket.
  6. Install the brake modulator/master cylinder. Refer to Brake Modulator/Master Cylinder Assembly Replacement in Antilock Brake System.
  7. Evacuate and charge the system. Refer to Refrigerant Recovery and Recharging .
  8. Inspect the system for leaks. Refer to Leak Testing .
  9. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls.