GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 SSR 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Air Conditioning Evaporator Thermal Expansion Valve Replacement

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the nut from the TXV mounting stud (1).

    3. Object Number: 1491134 Size: SH
  3. Remove the compressor hose assembly (2) from the TXV (3).
  4. Remove and discard the seal washers.

    5. Object Number: 1489450 Size: SH
  5. Remove the TXV bolts.
  6. Remove the TXV.
  7. Remove and discard the seal washers.

Installation Procedure

    Object Number: 1489450 Size: SH
  1. Install new seal washers to the evaporator core fittings. Refer to Sealing Washer Replacement .
  2. Install the TXV.

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

  3. Install the TXV bolts.

    4. Tighten
    Tighten the bolts to 7 N·m (62 lb in).


    Object Number: 1491134 Size: SH
  4. Install new sealing washers on the compressor hose assembly (2). Refer to Sealing Washer Replacement .
  5. Install the compressor hose assembly to the TXV (3).
  6. Install the TXV nut (1).

    7. Tighten
    Tighten the nut to 20 N·m (15 lb ft).

  7. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  8. Leak test the fittings using the J 39400-A .