GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 36850 Transjel® Transmission Assembly Lubricant

Removal Procedure


    Object Number: 155858  Size: SH
  1. Use a standard drift punch and a hammer in order to remove the roll pin and the low speed gearshift fork (3) from the low speed gear shift shaft.

  2. Object Number: 155859  Size: SH
  3. Use a standard drift punch and hammer in order to remove the following components from the low speed gear shift shaft:
  4. 2.1. One roll pin
    2.2. The low speed gearshift yoke

    Object Number: 155860  Size: SH
  5. Use a standard drift punch and a hammer in order to remove the following components from the high speed gear shift shaft:
  6. 3.1. One roll pin
    3.2. The high speed gearshift fork

    Object Number: 155861  Size: SH
  7. Use a standard drift punch and a hammer in order to remove the following components from the high speed gear shift shaft.
  8. 4.1. One roll pin
    4.2. The high speed gearshift yoke
  9. Clean all the components thoroughly with a clean solvent.
  10. Inspect the high and low speed gearshift shafts for the following conditions. Replace as necessary:
  11. • Flat spots
    • Excessive wear
    • Damage
  12. Inspect the contact surfaces of the high and low speed gearshift forks for the following conditions. Replace as necessary:
  13. • Excessive wear
    • Cracks
    • Other damage

    Object Number: 155818  Size: SH
  14. Use a feeler gage in order to measure the high speed and low speed gearshift fork-to-synchronizer sleeve clearance.
  15. • Match each shift fork to its synchronizer sleeve.
    • Measure the clearance.
    • If the gearshift fork-to-synchronizer sleeve clearance is more than 1.0 mm (0.039 in), replace the gearshift and synchronizer sleeve.

Installation Procedure

  1. Apply a light coat of J 36850 to all of the parts prior to assembly.

  2. Object Number: 155861  Size: SH
  3. Install the high speed gearshift yoke onto the high speed gearshift shaft.
  4. Secure the high speed gearshift yoke with a roll pin.

  5. Object Number: 155860  Size: SH
  6. Install the high speed gearshift fork onto the high speed gearshift shaft.
  7. Secure the high speed gearshift fork with a roll pin.

  8. Object Number: 155859  Size: SH
  9. Install the low speed gearshift yoke onto the low speed gearshift shaft.
  10. Secure the low speed gearshift yoke with a roll pin.

  11. Object Number: 155858  Size: SH
  12. Install the low speed gearshift fork from the low speed gearshift shaft (3).
  13. Secure the low speed gearshift fork with a roll pin.