GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 21366 Converter Holding Strap
    • J 46409 Torque Converter Lifting Handles
    • J 44723 Transmission/Stand Adaptor Plate

Removal Procedure


    Object Number: 1660894  Size: SH
  1. Remove the transmission from the vehicle. Refer to Transmission Replacement .
  2. Install J 21366 to restrain the torque converter.
  3. Install J 44723 . Refer to Holding Fixture Installation .
  4. Position the transmission vertically with the torque converter end up.
  5. Remove J 21366 torque converter retaining bracket.

  6. Object Number: 1660895  Size: SH

    Important: The distance from the torque converter mounting lugs to the transmission mounting face is an important measurement. It is required to check correct reassembly of the torque converter.

  7. Measure from the mounting lugs to the transmission mounting face.
  8. Install J 46409 180 degrees apart into 2 lugs on the front of the torque converter.
  9. Caution: Avoid personal injury or property damage when removing or installing the torque converter by seeking an assistant to help lift the torque converter.

  10. Lift the torque converter free of the transmission and place it on the work table.
  11. Remove the lifting handles.

Installation Procedure


    Object Number: 1660895  Size: SH
  1. Lubricate the converter pump hub OD and the torque converter seal with clean transmission fluid.
  2. Install J 46409 180 degrees apart into 2 lugs on the front of the torque converter.
  3. Caution: Avoid personal injury or property damage when removing or installing the torque converter by seeking an assistant to help lift the torque converter.

  4. Lift the torque converter into the transmission.
  5. Spin the torque converter to engage the turbine shaft splines in the torque converter hub, the stator shaft splines in the stator race and to engage the drive flats on the converter pump hub with the oil pump drive gear.
  6. The torque converter is correctly installed when the distance from the lugs to the mounting face is the same as when measured before removing the torque converter.

  7. Object Number: 1660894  Size: SH
  8. Install J 21366 .
  9. Reinstall the transmission into the vehicle. Refer to Transmission Replacement .
  10. Important: The FastLearn (adapt) procedure must be performed. This can be done in one step using a scan tool. If this procedure is not done, the TCM's adaptive values will be at the settings that it learned for the old components. and will be in slow adaptive mode. Under these conditions, it would take an unacceptably long time for the adaptive values to converge to levels suitable for the new transmission.

  11. Perform the FastLearn procedure. Refer to FastLearn Procedure .