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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 198 (Manual Transmission - TREMEC 6-Speed (M3L Mg9)) >> Repair Instructions - Off Vehicle >> Transmission Disassemble (MG9) >> Shift Shaft Assemblies and Gear Cluster Removal

Shift Shaft Assemblies and Gear Cluster Removal

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: 5th/6th And Reverse Shift Shaft Assembly
    GM2102221Courtesy of GENERAL MOTORS COMPANY
  1. Rotate the 5th/6th and the reverse shift shaft levers off the shift interlock plate.
  2. Remove the 5th/6th and the reverse shift shaft assembly.
    3. Fig 2: Countershaft
    GM2102222Courtesy of GENERAL MOTORS COMPANY
  3. Remove the countershaft. Lift up the mainshaft enough in order to remove the countershaft.
    4. Fig 3: Mainshaft And Shift Shaft Components
    GM2102223Courtesy of GENERAL MOTORS COMPANY
  4. Remove the mainshaft and the shift shaft components as an assembly.
  5. Remove the shift shaft assembly from the mainshaft.
    6. Fig 4: 4th Gear Blocking Ring Assembly Components
    GM2102224Courtesy of GENERAL MOTORS COMPANY
  6. Remove the 4th gear blocking ring assembly, which includes the following components:
    1. 4th speed drive gear blocking ring (2)
    2. 4th speed drive gear outer cone (3)
    3. 4th speed drive gear inner cone (4)
  7. Remove the input shaft (1).
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