GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Grand Am 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Air Conditioning Evaporator Hose Assembly Replacement

Removal Procedure

    Object Number: 590058 Size: SH
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the right wheelhouse splash shield. Refer to Wheelhouse Splash Shield Replacement in Body Front End.
  4. Using a backup-wrench on the accumulator, remove the evaporator hose assembly nut from the accumulator.
  5. Remove and discard the O-ring seal.

    6. Object Number: 590055 Size: SH
  6. Remove the bolt holding the evaporator hose assembly to the condenser.
  7. Remove the evaporator hose assembly from the condenser.
  8. Remove and discard the O-ring seal.

    9. Object Number: 590061 Size: SH
  9. Remove the nut holding the evaporator hose assembly to the evaporator.
  10. Remove the evaporator hose assembly from the evaporator.
  11. Remove and discard the O-ring seal.
  12. Unfasten the two clips holding the evaporator hose assembly.
  13. Remove the evaporator hose assembly.

Installation Procedure

    Object Number: 590061 Size: SH
  1. Position the evaporator hose assembly.
  2. Fasten the two clips holding the evaporator hose assembly.
  3. Install a NEW O-ring seal on evaporator hose assembly evaporator end.

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

    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.

  4. Install the evaporator hose assembly and the nut to the evaporator.

    5. Tighten
    Tighten the fitting nut to 24 N·m (18 lb ft).


    Object Number: 590055 Size: SH
  5. Install a NEW O-ring seal on condenser end of the evaporator hose assembly.

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

  6. Install the evaporator hose and bolt to the condenser.

    7. Tighten
    Tighten the fitting bolt to 24 N·m (18 lb ft).


    Object Number: 590058 Size: SH
  7. Install a NEW O-ring seal on the accumulator end of the evaporator hose assembly.

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

  8. Install the evaporator hose to the accumulator.

    9. Tighten
    Using a backup wrench on the accumulator tighten the fitting nut to 25 N·m (18 lb ft).

  9. Install the right wheelhouse splash shield. Refer to Wheelhouse Splash Shield Replacement in Body Front End.
  10. Lower the vehicle.
  11. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  12. Inspect the system operation.
  13. Perform the leak test. Refer to Leak Testing .