GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 36850 Transjel Lubricant
    • J 39437 Bushing Installer

For equivalent regional tools, refer to Special Tools.

1st/2nd, 3rd/4th Shift Rail Assembly


    Object Number: 2102243  Size: SH
  1. Install the selector pin (2) on the shift shaft (3).
  2. Align the roll pin hole on the selector pin with the roll pin hole on the shift shaft.
  3. Install the roll pin (1) through the selector pin (2) and the shift shaft (3).

  4. Object Number: 2102242  Size: SH

    Note: The interlock plate fits loosely on the shift shaft and selector pin assembly. Use the J 36850 transjel lubricant to hold the neutral return cam pin in place.

  5. Install the interlock plate (1) on the selector pin (2).

  6. Object Number: 2102240  Size: SH
  7. Install the 3rd/4th shift fork (1) on the shift shaft (2).

  8. Object Number: 2102246  Size: SH
  9. Align the notch on the shift link (2) with the shift interlock plate (1).

  10. Object Number: 2102238  Size: SH
  11. Install the 1st/2nd shift fork (2) on the shift shaft (1).

  12. Object Number: 2102247  Size: SH
  13. Install the 1st/2nd shift shaft link (3) beneath the 3rd/4th shift shaft link (1) on the interlock plate and the selector roll pin assembly (2).

5th/6th, Reverse Shift Rail Assembly


    Object Number: 1938404  Size: SH
  1. Install the 5th/6th shift shaft lever bushings (1) and (3) in the 5th/6th shift lever (2) using the J 39437 bushing installer  (4) and a hammer.

  2. Object Number: 1938401  Size: SH
  3. Install the retainer ring (2) on the 5th/6th shift lever (1).

  4. Object Number: 1938395  Size: SH
  5. Install the 5th/6th shift lever (2) on the shift shaft (1).

  6. Object Number: 1938394  Size: SH
  7. Install the reverse shift lever (2) on the shift shaft (1).

  8. Object Number: 1938393  Size: SH
  9. Install the reverse lever roll pin (3).
  10. Install the reverse collar (2).
  11. Install the reverse collar roll pin  (1).