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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (Automatic Transmission - 8L90 (M5U) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Manual Shift Shaft Seal Replacement >> Installation Procedure

Installation Procedure

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.
  1. GM3817501Courtesy of GENERAL MOTORS COMPANY

    Install the NEW manual shift shaft seal (1) using DT-47770  seal installer.

  2. GM3817211Courtesy of GENERAL MOTORS COMPANY

    Install the manual shift shaft (2) aligning the position switch assembly onto the shaft.

  3. Install the NEW manual shift shaft pin (1).
  4. Install the NEW manual shift shaft detent lever hub pin (3).
  5. Install the control valve body. Control Valve Body Replacement 
  6. Install the automatic transmission range selector lever. Automatic Transmission Range Selector Lever Replacement 
  7. Reprogram the transmission. Solenoid Valve Characterization Reprogramming
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