GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra - Mexico 🢒 Preface 🢒 Cautions and Notices 🢒 Air Conditioning Evaporator Thermal Expansion Valve Replacement

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1308333 Size: SH
  1. Disconnect the negative battery cable.
  2. Recover the refrigerant Refer to Refrigerant Recovery and Recharging .
  3. Remove the suction hose/liquid pipe block retaining nuts at the fire wall.

    4. Object Number: 1308334 Size: SH
  4. Remove the expansion valve connector block retaining stud bolts.
  5. Remove the expansion valve.
  6. Discard the O-rings.

Installation Procedure

    Object Number: 1308334 Size: SH
  1. Clean the grooves that fit the O-rings of any dirt or contamination.
  2. Install new O-rings on the evaporator tubes.
  3. Install a expansion valve onto the evaporator tubes.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Insert the expansion valve connector block retaining stud bolts.

    5. Tighten
    Tighten the expansion valve retaining stud bolts to 8 N·m (71 lb in).


    Object Number: 1308333 Size: SH
  5. Install the suction hose/liquid pipe block retaining nuts.

    6. Tighten
    Tighten the suction hose/liquid pipe block-to-expansion valve retaining nuts to 14 N·m (10 lb ft).

  6. Connect the negative battery cable.
  7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .