GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 5590 Press Tube
    • J 39473 Bearing Installer
    • Hydraulic Press
    • V-Blocks

    Object Number: 38441  Size: SH
  1. Install a new small tapered bearing. Use the J 39473 with V-blocks and a hydraulic press.
  2. Important: Do the following when installing the 5TH/6TH speed synchronizer assembly:

    1. Start the press operation.
    2. Stop pressing before the keys engage the blocking ring slots.
    3. Lift and rotate the 5TH speed gear in order to engage the keys with the blocking ring.
    4. Continue pressing until the synchronizer is seated.


    Object Number: 38333  Size: SH
  3. Install the following parts:
  4. 2.1. The 5TH speed drive gear caged needle bearing
    2.2. The 5TH speed drive gear
    2.3. The 5TH speed drive gear blocking ring
    2.4. The 5TH/6TH speed synchronizer assembly (The ID groove on the sleeve faces 5TH speed gear.) Use the J 5590 and a hydraulic press

    Object Number: 38625  Size: SH
  5. Install the following parts:
  6. 3.1. A new 5TH/6TH speed synchronizer retainer ring
    3.2. The 6TH speed drive gear blocking ring

    Object Number: 38624  Size: SH
  7. Install the following parts:
  8. 4.1. The 6TH speed drive gear spacer
    4.2. The 6TH speed drive gear caged needle bearing
    4.3. The 6TH speed drive gear

    Object Number: 38623  Size: SH
  9. Install the 6TH speed drive gear thrust washer.

  10. Object Number: 38621  Size: SH
  11. Install the 5TH/6TH speed shift fork.