GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

  2. Object Number: 411429  Size: SH
  3. Disconnect the electrical connector from the refrigerant low temperature sensor.
  4. Unscrew the refrigerant low temperature sensor from the evaporator hose.
  5. Remove and discard the O-ring from the evaporator hose. Refer to O-Ring Replacement .

Installation Procedure


    Object Number: 411429  Size: SH
  1. Install the new O-ring to the evaporator hose. Refer to O-Ring Replacement .
  2. Install the refrigerant low temperature sensor to the evaporator hose.
  3. Connect the electrical connector to the refrigerant low temperature sensor.
  4. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  5. Leak test the fittings using the J 39400-A .