GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 802735  Size: SH
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  2. Remove the instrument panel (I/P) carrier. Refer to Refrigerant Recovery and Recharging.
  3. Remove the insulation (1) from the thermal expansion valve (TXV). Discard the used insulation.

  4. Object Number: 817514  Size: SH
  5. Remove the HVAC line clamp screw.

  6. Object Number: 817516  Size: SH
  7. Remove the HVAC line clamp.

  8. Object Number: 802742  Size: SH
  9. Remove the bolts (1) that secure the TXV to the evaporator.

  10. Object Number: 802746  Size: SH
  11. Remove the TXV line bracket.

  12. Object Number: 2013305  Size: SH
  13. Remove the TXV from the evaporator core.
  14. Note: Cap or tape the open A/C refrigerant components immediately to prevent system contamination.

  15. Straightly pull the TXV out from the A/C lines.
  16. Remove the thermal expansion valve.
  17. Remove and discard the O-ring seals. Refer to O-Ring Replacement.

Installation Procedure


    Object Number: 2013305  Size: SH
  1. Lubricate the O-rings. Refer to O-Ring Replacement.
  2. Install the A/C lines into the TXV.
  3. Carefully slide the TXV onto the evaporator core until seated.

  4. Object Number: 802746  Size: SH
  5. Install the TXV line bracket.
  6. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 802742  Size: SH
  7. Install the bolts (1) that secure the TXV to the evaporator.
  8. Tighten
    Tighten the bolt to 3.5 N·m (31 lb in).


    Object Number: 817516  Size: SH
  9. Install the HVAC line clamp.

  10. Object Number: 817514  Size: SH
  11. Install the HVAC line clamp screw.
  12. Tighten
    Tighten the screw to 1 N·m (9 lb in).


    Object Number: 802735  Size: SH
  13. Install new insulation (1) onto the lines and TXV.
  14. Install the instrument panel carrier. Refer to Refrigerant Recovery and Recharging.
  15. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging.