GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 1998 🢒 Unit Repair 🢒 Transmission/Transaxle 🢒 Manual Transmission - M42 and M58 🢒 Gearshift and Select Shaft Overhaul

Removal Procedure

    Object Number: 155812 Size: SH
  1. Use a standard drift punch and a hammer in order to remove the gearshift cam guide roll pin from the gearshift and the select shaft.
  2. Remove the fifth and reverse gearshift cam guide from the gearshift and the select shaft.
  3. Using your thumb and fingers, compress the fifth and the reverse cam guide springs together and remove the interlock shaft roll pin. Carefully release the tension on the springs.

    4. Object Number: 155808 Size: SH
  4. Remove the reverse interlock shaft roll pin from the gearshift and the select shaft.
  5. Remove the fifth and reverse gearshift cam from the gearshift and the select shaft.

    6. Object Number: 155811 Size: SH
  6. Remove the fifth and reverse cam guide return spring from the gearshift and the select shaft.

    7. Object Number: 155813 Size: SH
  7. Remove the following components from the gearshift and the select shaft:
    8. • The select spring guide
    • The reverse select spring
  8. Remove one washer and one C-clip from the gearshift and the select shaft:

    9. Object Number: 155814 Size: SH
  9. Use a standard drift punch and a hammer in order to remove the following components from the gearshift and the select shaft:
    10. • The fifth and reverse gearshift cam inner roll pin
    • The fifth and reverse gearshift cam outer roll pin

    Object Number: 155815 Size: SH
  10. Remove the following components from the gearshift and the select shaft:
    11. • The gearshift interlock plate
    • The gearshift and select lever

    Object Number: 155816 Size: SH
  11. Remove the following components from the gearshift and the select shaft:
    12. • One C-clip
    • One washer
    • The low speed select spring
    • The select spring guide
  12. Remove one C-clip from the gearshift and the select shaft.
  13. Clean all of the components with clean solvent. Dry the components thoroughly.
  14. Inspect all of the gearshift and select shift parts for excessive wear or damage. Replace as necessary:

Installation Procedure

    Object Number: 155817 Size: SH
  1. Install one C-clip onto the gearshift and select shaft.
  2. Install the select spring guide and the low speed select spring onto the gearshift and select shaft.

    3. Object Number: 155816 Size: SH
  3. Install one washer and one C-clip onto the gearshift and select shaft.

    4. Object Number: 155815 Size: SH
  4. Install the gearshift interlock plate and gearshift and select lever onto the gearshift and select shaft.
  5. Install the fifth and reverse gearshift cam inner and outer roll pins into the gearshift and select shaft using a standard drift punch and a hammer.

    6. Object Number: 155813 Size: SH
  6. Install one C-clip and one washer onto the gearshift and select shaft.
  7. Install the reverse select spring and select spring guide onto the gearshift and select shaft.

    8. Object Number: 155814 Size: SH
  8. Install the fifth and reverse gearshift cam guide onto the gearshift and select shaft.
  9. Install the gearshift cam guide roll pin into the gearshift and select shaft using a standard drift punch and a hammer.

    10. Object Number: 155811 Size: SH
  10. Install the fifth and reverse cam guide return spring onto the gearshift and select shaft.

    11. Object Number: 155808 Size: SH

    Important: When installing the fifth and reverse gearshift cam, load the fifth and reverse cam guide return spring by winding one half to one full turn.

  11. Install the fifth and reverse gearshift cam onto the gearshift and select shaft.
  12. Install the reverse interlock shaft roll pin into the gearshift and select shaft using a standard drift punch and a hammer.