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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Automatic Transmission - 6L90 (MYD) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Manual Shift Shaft and Seal Replacement

Manual Shift Shaft and Seal Replacement

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
GM1655113Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Lifting and Jacking the Vehicle
  2. Remove the transmission fluid pan. Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement 
  3. Remove the control valve body. Control Valve Lower Body and Upper Body Replacement 
1 Manual Shift Shaft Pin

Procedure

  1. DISCARD the pin. Replace with NEW pin.
  2. "Walk" the pin out using side cutters.
2 Manual Shaft Detent Lever Hub Pin

Procedure

  1. DISCARD the pin. Replace with NEW pin.
  2. "Walk" the pin out using side cutters.
3 Manual Shift Shaft
NOTE:

The manual shaft must be removed to replace the manual shaft seal.
4 Manual Shift Shaft Seal

Procedure

  1. Use the J 45201  Cooler Line Seal Remover to remove the seal from the transmission case.
  2. Use the DT 47770  Seal Installer to install the seal into the transmission case.

Special Tools

  • DT 47770  Seal Installer
  • J 45201  Cooler Line Seal Remover
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