GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 25025-5 Guide Pin
    • J 36850 Assembly Lubricant

    Object Number: 40637  Size: SH

    Notice: Use J 36850 or equivalent during assembly in order to retain checkballs or to lubricate components. Lubricants other than the recommended assembly lube changes the transmission fluid characteristics and causes undesirable shift conditions or filter clogging.

  1. Install the 8 checkballs (54) (9 some models) into the case passages:
  2. • The #2 checkball is only used on some models.
    • Use J 36850 or equivalent in order to hold the checkballs in place.
  3. Install the PWM solenoid screen (75) into the case.

  4. Object Number: 40638  Size: SH
  5. Install the manual valve (319) into the control valve assembly.

  6. Object Number: 40639  Size: SH
  7. Install the J 25025-5 into the transmission case.
  8. Install the spacer plate to case gasket (48).
  9. Install the control valve assembly (44). Attach the manual valve to the detent lever while installing the control valve assembly (44).

  10. Object Number: 40640  Size: SH
  11. Install the transmission fluid pressure manual valve position switch (40).
  12. Install the transmission fluid pressure manual valve position switch bolts (76) finger tight.

  13. Object Number: 40641  Size: SH
  14. Tighten the bolts (76) in the order shown.
  15. Tighten
    Tighten the bolts to 11 N·m (97 lb in).

    Refer to Fastener Notice .

  16. Remove the J 25025-5 .

  17. Object Number: 54709  Size: SH
  18. Install the manual shaft detent spring assembly (41) and bolts (35).
  19. Install the two wiring harness clamps (33) and bolts (35).
  20. Install the lube oil pipe (39) with the short end into the control valve assembly.
  21. Install the lube oil pipe retainer (37) and the bolt (35).
  22. Install the remaining control valve body assembly bolts (35).

  23. Object Number: 54712  Size: SH

    Notice: Tighten the control valve assembly bolts in a spiral pattern starting from the center. If the bolts are tightened in a random pattern, the valve bores may become distorted, which can inhibit valve operation.

  24. Tighten the control valve body assembly bolts (35) in the order shown.
  25. Tighten
    Tighten the bolts to 11 N·m (97 lb in).