GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Lumina 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Suction Hose Replacement

Removal Procedure
  1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L.
  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. Object Number: 491758 Size: SH
  4. Remove the liquid line/suction line bracket.

    5. Object Number: 412091 Size: SH
  5. Remove the suction line nut (1) at the accumulator and position the line aside.

    6. Object Number: 412855 Size: SH
  6. Remove the suction line block fitting bolt.

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

  7. Remove the suction line.
  8. Remove the suction line o-rings seals and discard.

Installation Procedure

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

  1. Install the new O-ring seals onto the suction line. Refer to O-Ring Replacement .

    2. Object Number: 412855 Size: SH
  2. Install the suction line into the block fitting.

    3. 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 suction line block fitting bolt.

    4. Tighten
    Tighten the suction line block fitting bolt to 16 N·m (12 lb ft).


    Object Number: 412091 Size: SH
  4. Install the suction line nut (1) at the accumulator.

    5. Tighten
    Tighten the suction line nut to 47 N·m (35 lb ft).


    Object Number: 491758 Size: SH
  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 recharge the system. Refer to Refrigerant Recovery and Recharging .
  8. Inspect the A/C system for leaks. Refer to Leak Testing .
  9. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls- 3.1L.