GM Service Manual Online
For 1990-2009 cars only

Transmission Extension Disassemble C 3500 HD Model

Tools Required

    • J 6125-B Slide Hammer
    • J 23129 Universal Seal Remover

    Object Number: 789405  Size: SH
  1. Using the J 6125-B  (1) and the J 23129  (2), remove the mainshaft seal.

  2. Object Number: 789407  Size: SH
  3. Remove the mainshaft rear bearing retaining ring.

  4. Object Number: 789409  Size: SH
  5. Using a hammer and a punch, remove the rear bearing. Do not reuse the bearing after removal.

Transmission Extension Disassemble C Model


    Object Number: 789414  Size: SH
  1. Using a hammer and a suitable punch, remove the mainshaft seal from the transmission extension.

  2. Object Number: 789415  Size: SH
  3. Remove the mainshaft rear bearing retainer ring.

  4. Object Number: 789416  Size: SH
  5. Using a hammer and a suitable punch, remove the rear bearing. Do not reuse the bearing after removal.