GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Optra 🢒 Transmission 🢒 Automatic Transmission - Aisin 55-51LE 🢒 Control Valve Body Replacement

Removal Procedure

    Note: Place the transaxle in neutral (N).

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

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

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

    6. Object Number: 749341 Size: SH
  6. Remove the wiring harness (33) from the automatic transaxle wiring harness clip.
  7. With a twisting motion remove the complete wiring harness assembly.

    8. Object Number: 749343 Size: SH
  8. Remove the 2 control valve body bolts/screws (31), control valve body fluid passage cover (37) and gasket (38).

    9. Object Number: 773157 Size: SH
  9. Remove the 6 control valve body mounting bolts/screws (1-6).

    10. Object Number: 749347 Size: SH
  10. While holding the control valve body assembly, disconnect the manual shift detent lever assembly (710) from the manual valve link (336).
  11. Move the detent lever assembly clockwise for ease of removing the manual valve.
  12. Remove the control valve body assembly (39).

    13. Object Number: 749350 Size: SH
  13. Remove the 2 transaxle case fluid passage seals (86).

Installation Procedure

    Object Number: 749350 Size: SH
  1. Install 2 new transaxle case fluid passage seals (86) into the transaxle case fluid ports.

    2. Object Number: 749347 Size: SH
  2. While holding the control valve body assembly (39), connect the manual valve link (336) to the manual shift detent lever assembly (710).

    3. Object Number: 749344 Size: SH
  3. Install the 6 control valve body assembly to transaxle case bolts and hand tighten.

    4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1258468 Size: SH
  4. Install the control valve body assembly-to-transaxle case bolts in sequence and tighten to 10 N·m (89 lb in).

    5. Object Number: 749343 Size: SH
  5. Install a new control valve body fluid passage cover gasket (38).
  6. Install the control valve body fluid passage cover (37).
  7. Install the 2 control valve body bolts (31) and tighten to 10 N·m (89 lb in).

    8. Object Number: 874478 Size: SH
  8. Apply automatic transaxle fluid to a new transaxle wiring connector O-ring seal (46).
  9. Install a new transaxle wiring connector O-ring seal (46) onto the transaxle wiring harness assembly (33).
  10. Install the transaxle wiring harness assembly (33) into the transaxle case through the wiring harness bore.

    11. Object Number: 749339 Size: SH
  11. Apply automatic transaxle fluid to a new transaxle fluid temperature sensor O-ring seal (32).
  12. Install a new transaxle fluid temperature sensor O-ring seal (32) into the groove of the transaxle fluid temperature sensor (36).
  13. Install the transaxle fluid temperature sensor (36) into the front control valve body fluid temperature sensor bore.
  14. Install the transaxle fluid temperature sensor clip (49).
  15. Install the fluid temperature sensor bolt (31) and tighten to 10 N·m (89 lb in).

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