GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the control valve body cover. Refer to Control Valve Body Cover Replacement .

  2. Object Number: 749337  Size: SH
  3. Disconnect the wiring harness connectors (1-8).

  4. Object Number: 749339  Size: SH
  5. Remove the fluid temperature sensor bolt (31).
  6. Remove the fluid temperature sensor clamp (49).
  7. Remove the fluid temperature sensor (36) and the O-ring (32) from the control valve body.

  8. Object Number: 1826678  Size: SH
  9. Remove the A/T control wiring harness connector retainer (69).

  10. Object Number: 1826683  Size: SH
  11. Remove the transmission wiring harness assembly (33) from the transmission case assembly through the wiring harness bore.
  12. Remove the TCM seal (72) and the automatic transmission wiring connector seal (46) from the connector.

Installation Procedure


    Object Number: 1826683  Size: SH
  1. Apply GM T-IV automatic transaxle fluid GM P/N 88900925 to a NEW transaxle wiring connector O-ring seal (46).
  2. Install the NEW automatic transmission wiring connector seal (46) in the bore for the connector. The taper side of the seal goes up.
  3. Install a NEW TCM seal (72) on the connector.
  4. Install the transmission wiring harness assembly (33) into the transmission case assembly through the wiring harness bore.

  5. Object Number: 1826678  Size: SH
  6. Align the tab of the connector in the transmission case.
  7. Install the wiring harness connector retainer (69).

  8. Object Number: 749339  Size: SH
  9. Apply GM T-IV automatic transaxle fluid GM P/N 88900925 to a new transaxle fluid temperature sensor O-ring seal (32).
  10. Install a new transaxle fluid temperature sensor O-ring seal (32) into the groove of the transaxle fluid temperature sensor (36).
  11. Install the transaxle fluid temperature sensor (36) into the front control valve body fluid temperature sensor bore.
  12. Install the transaxle fluid temperature sensor clip (49).
  13. Notice: Refer to Fastener Notice in the Preface section.

  14. Install the fluid temperature sensor bolt (31).
  15. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1258491  Size: SH
  16. Connect the 8 solenoid wire connectors as follows:
  17. • 1 blue
    • 2 black
    • 3 green
    • 4 black
    • 5 blue
    • 6 gray
    • 7 brown
    • 8 black
  18. Install the control valve body cover. Refer to Control Valve Body Cover Replacement .
  19. Perform the transmission adaptive learn procedure. Refer to Transmission Adaptive Learn and Transmission Neutral Learn .