GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 23327 Clutch Spring Compressor
    • J 44764 Clutch Spring Compressor
    • J 45126 Snap Ring Pliers
    • J 45135 Seal Protector

For equivalent regional tools, refer to Special Tools.


    Object Number: 801866  Size: SH
  1. Inspect the housing for the following:
  2. • Plugged feed passages
    • Worn or damaged splines
    • Damaged or worn springs
    • Damaged or worn pistons
    • Worn or damaged clutch plates

    Object Number: 801865  Size: SH
  3. Install the intermediate piston (495) into the intermediate clutch housing (496).

  4. Object Number: 801864  Size: SH
  5. Install the intermediate clutch spring (494).
  6. Install the intermediate housing (496).

  7. Object Number: 801863  Size: SH
  8. Use J 44764 spring compressor and J 23327 spring compressor to compress the housing.
  9. Install the intermediate clutch housing retainer ring (497).
  10. Remove J 44764 spring compressor and J 23327 spring compressor .

  11. Object Number: 801862  Size: SH
  12. Install the intermediate apply plate (492).
  13. Install the intermediate clutch plates. Starting with the intermediate clutch plates (491) with external splines. Alternating with the intermediate clutch plates (490) internal splines. Refer to Clutch Plate Selection Specifications.
  14. Install the backing plate (489).
  15. Install the intermediate backing plate retainer ring (488).

  16. Object Number: 816723  Size: SH
  17. Measure the distance between the intermediate clutch backing plate and the bottom of the gage bar. Measure three times in different locations on the backing plate. Record this as H1.
  18. Apply 65 PSI (448.17 kPa) of air pressure to the specified port. Measure the distance between the intermediate clutch backing plate and the bottom of the gage bar. Measure three times in different locations on the backing plate. Record this as H2.
  19. Subtract H2 from H1 this is the clutch pack travel. Refer to Clutch Piston Travel Specifications.

  20. Object Number: 801868  Size: SH
  21. Use J 45135 seal protector  (2) and J 44764 spring compressor  (1) to install the overdrive piston (487).

  22. Object Number: 801860  Size: SH
  23. Install the overdrive piston spring (486).
  24. Use J 44764 spring compressor and J 23327 spring compressor to compress the overdrive clutch piston spring (486).
  25. Install the overdrive clutch spring retainer (485).
  26. Remove J 44764 spring compressor and J 23327 spring compressor .

  27. Object Number: 801859  Size: SH
  28. Install the overdrive clutch spacer (484).
  29. Install the overdrive clutch plates. Starting with the overdrive clutch plates (483) with external splines. Alternating with the overdrive clutch plates (482) with internal splines. Refer to Clutch Plate Selection Specifications.
  30. Install the overdrive backing plate (481).
  31. Install the overdrive clutch retainer ring (480).

  32. Object Number: 817796  Size: SH
  33. Measure the distance between the overdrive clutch backing plate and the bottom of the gage bar. Measure three times in different locations on the backing plate. Record this as H1.
  34. Apply 65 PSI (448.17 kPa) of air pressure to the specified port. Measure the distance between the overdrive clutch backing plate and the bottom of the gage bar. Measure three times in different locations on the backing plate. Record this as H2.
  35. Subtract H2 from H1 this is the clutch pack travel. Refer to Clutch Piston Travel Specifications.

  36. Object Number: 801814  Size: SH
  37. Install the overdrive clutch housing (15) into the case.

  38. Object Number: 816726  Size: SH
  39. Measure the distance from the bottom of the gauge bar to the top of the overdrive and intermediate clutch. Record this as M1.
  40. Measure the distance from the bottom of the gage Bar to the bottom of the intermediate and overdrive retainer ring groove in the case. Record this as M2.
  41. Subtract M2 from M1. This will be dimension M.

  42. Object Number: 851056  Size: SH
  43. Measure the intermediate and overdrive clutch housing retaining ring (14). Refer to Intermediate and Overdrive Clutch Housing Retaining Ring Specifications for the correct size washer.

  44. Object Number: 801813  Size: SH

    Warning: Use care when removing or installing the snap ring. Be sure the J 45126 snap ring pliers are installed properly onto the snap ring or bodily injury may occur.

    Note: If housings is replaced a measurement must be taken for end play.

  45. Using J 45126 pliers install the intermediate and overdrive clutch housing retainer ring (14) into the case.