GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 26549-E Orifice Tube Remover
    • J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  2. Remove the accumulator. Refer to Air Conditioning Accumulator Replacement.
  3. Remove the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement.

  4. Object Number: 735916  Size: SH
  5. Remove the evaporator tube nut (3) at the evaporator (1).
  6. Remove the evaporator tube (4) from the evaporator (1).

  7. Object Number: 735915  Size: SH
  8. Remove the O-ring seal and discard.
  9. Remove the nut from the evaporator tube block fitting.
  10. Separate the evaporator tubes (4,6) at the block fitting.
  11. Use the J 26549-E in order to remove the expansion tube.
  12. Remove the expansion tube from the evaporator tube (6).

Installation Procedure


    Object Number: 735915  Size: SH

    Note: Install the shorter screen end of the expansion tube into the evaporator tube (6) first.

  1. Use the J 26549-E in order to install the expansion tube.
  2. Install the new O-ring seal. Refer to O-Ring Replacement.
  3. Assemble the evaporator tubes (4,6).
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the evaporator tube nut.
  6. Tighten
    Tighten the nut to 28 N·m (21 lb ft).


    Object Number: 735916  Size: SH
  7. Connect the evaporator tube (4) to the evaporator (1).
  8. Install the nut (3).
  9. Tighten
    Tighten the nut to 28 N·m (21 lb ft).

  10. Install the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement.
  11. Install the accumulator. Refer to Air Conditioning Accumulator Replacement.
  12. Recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
  13. Leak test the fittings of the components using the J 39400-A .