GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express - AWD 🢒 Transmission 🢒 Automatic Transmission - 4L80-E/4L85-E 🢒 Center Support and Gear Unit Assembly Installation

Special Tools

    • J 6129 Handle
    • J 28585 Snap Ring Remover
    • J 38868 Output Shaft Assembly Remover and Installer

For equivalent regional tools, refer to Special Tools.


    Object Number: 334768 Size: SH
  1. Attach the J 38868 remover and installer and the J 6129 handle onto the main shaft.
  2. Align the bolt hole in the center support with the bolt hole in the case and carefully lower the center support and gear unit assembly (640-672) into the case.
  3. Remove the tools.

    4. Object Number: 334801 Size: SH
  4. Using the J 28585 snap ring remover , install the center support retaining ring (633). The end gap of the center support retaining ring (633) should be located at the 9 o'clock position with the beveled edge of the retaining ring facing up.