GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Epica 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Air Conditioning Evaporator Thermal Expansion Valve Replacement

Removal Procedure

    Object Number: 1256099 Size: SH
  1. Remove the retaining nuts that secure the suction hose and the liquid evaporator pipe blocks at the cowl.

    2. Object Number: 1256105 Size: SH
  2. Remove the expansion valve bolts.
  3. Remove the expansion valve.
  4. Remove the O-rings from the evaporator lines.

Installation Procedure

    Object Number: 1256105 Size: SH
  1. Clean the O-ring surface areas of dirt or contamination.
  2. Install the new O-rings on the evaporator lines.
  3. Install a new expansion valve onto the evaporator lines.

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

  4. Insert the expansion valve bolts through the expansion valve into the mount surface of the evaporator flange.

    5. Tighten
    Tighten the expansion valve bolts to 10 N·m (89 lb in).


    Object Number: 1256099 Size: SH
  5. Install the retaining nuts that secure the suction hose and the liquid evaporator pipe blocks at the cowl.

    6. Tighten
    Tighten the suction hose and the liquid evaporator pipe retaining nuts to 10 N·m (89 lb in).