GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the control valve body. Refer to Valve Body .

  2. Object Number: 14464  Size: SH
  3. Remove the accumulator cover bolts.
  4. Remove the 1-2 accumulator cover and pin, piston, and springs.

  5. Object Number: 14467  Size: SH
  6. Remove the 1-2 accumulator piston spring.
  7. Remove the 1-2 accumulator piston, and the oil seal ring.

  8. Object Number: 14468  Size: SH
  9. Remove the oil pass cover bolt.
  10. Remove the oil pass cover.

  11. Object Number: 14469  Size: SH
  12. Remove the spacer plate.
  13. Remove the spacer plate gaskets.

  14. Object Number: 5454  Size: SH
  15. Remove the 3-4 accumulator spring.
  16. Remove the piston oil seal ring.
  17. Remove the 3-4 accumulator piston, and the pin.
  18. Inspect the accumulator assembly.

Installation Procedure

Tools Required

    • J 25025-B Pump and Valve Body Alignment Pin Set
    • J 36850 Transjel® Transmission Assembly Lubricant

    Object Number: 5454  Size: SH
  1. Install the 3-4 accumulator pin into the transmission case.
  2. Install the 3-4 accumulator piston onto the pin. The piston legs must face the valve body.
  3. Install the 3-4 accumulator piston oil seal ring.
  4. Install the 3-4 accumulator piston spring.
  5. Install theJ 25025-B to the transmission case.

  6. Object Number: 14469  Size: SH
  7. Install the case gasket and the valve body gasket to the spacer plate. The case gasket is identified by a C. The valve body gasket is identified by a V.
  8. Use theJ 36850 in order to retain the gaskets to the spacer plate.

  9. Object Number: 14469  Size: SH
  10. Install the spacer plate and the gaskets to the transmission case.

  11. Object Number: 14468  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  12. Install the oil pass cover and the oil pass cover bolts.
  13. Tighten
    Tighten the bolts to 11 N·m (97 lb in).


    Object Number: 14467  Size: SH
  14. Install the 1-2 accumulator piston with the piston legs facing toward the case.
  15. Install the oil seal ring to the accumulator cover.
  16. Install the 1-2 accumulator spring onto the piston.

  17. Object Number: 14464  Size: SH
  18. Install the 1-2 accumulator cover and the cover bolts.
  19. Tighten
    Tighten the bolts to 11 N·m (97 lb in).

  20. Remove the J 25025-B from the transmission case.
  21. Install the control valve body. Refer to Valve Body .