GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2001 🢒 Grand Am 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T40-E/4T45-E 🢒 Channel Plate Assembly Disassemble

    Object Number: 55115 Size: SH

    Important: The accumulator pins are pressed into the channel plate (27). Do not remove the accumulator pins.

  1. Remove the three accumulator pistons (29) from the channel plate (27).

    2. Important: The 1-2 accumulator assist spring (125) has a retainer that presses into the spring. Keep the retainer and the spring together as an assembly.

  2. Remove the 1-2 accumulator assist spring (125).
  3. Remove the 2-3 accumulator assist spring (47).
  4. Remove the seals (30) from the accumulator pistons (29).
  5. Discard the accumulator piston seals (30).
  6. Remove the manual valve (800) from the channel plate (27).

    7. Object Number: 55117 Size: SH
  7. Inspect the channel plate (27) for damage.
  8. inspect the channel plate (27) passages for debris.
  9. Inspect the accumulator pistons (29), the assist springs (47, 125), and the pins for damage.
  10. Inspect the channel plate sleeve for wear from the turbine shaft.
  11. Inspect the channel plate (27) bolt holes for stripped threads and debris.
  12. Inspect the channel plate machined surface for nicks or scratches that could cause a fluid leak.
  13. Inspect the manual valve (800) for freedom of movement.
  14. Inspect the drive sprocket to channel plate thrust washer (34).
  15. Clean and dry each component.