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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 >> Shift Shaft and Fork Assemblies Cleaning and Inspection (MG9)

Shift Shaft and Fork Assemblies Cleaning and Inspection (MG9)

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: Shift Shaft & Fork Assembly Parts
    GM2102245Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Wear safety glasses to avoid injury when using compressed air or any cleaning solvent. Bodily injury may occur if fumes are inhaled or if skin is exposed to chemicals.

  1. Clean the shift shaft and fork assembly parts with a suitable solvent. Air dry all the parts.
  2. Fig 2: Shift Forks, Shift Levers And Shift Links
    GM1887591Courtesy of GENERAL MOTORS COMPANY
  3. Inspect the shift forks, shift levers, and the shift links for excessive wear, fractures or distortion.
  4. Fig 3: Shift Shaft Lever Bushing
    GM463422Courtesy of GENERAL MOTORS COMPANY
  5. Inspect the shift shaft lever bushings for excessive wear.
  6. Fig 4: Identifying Inspection Areas On Shift Fork Nylon Inserts
    GM38650Courtesy of GENERAL MOTORS COMPANY
  7. Inspect the shift fork nylon inserts for wear.
  8. Replace parts that are fractured, excessively worn, or distorted.
  9. Replace an excessively worn or burred shift shaft.