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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) >> Transmission Case Removal

Transmission Case 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: Shift Detent Assembly
    GM2102212Courtesy of GENERAL MOTORS COMPANY
  1. Remove the shift detent assembly (1).
    2. Fig 2: Clutch Housing To Transmission Case Bolts
    GM2102214Courtesy of GENERAL MOTORS COMPANY
  2. Remove 9 of the 11 clutch housing to transmission case bolts (1).
  3. Rotate the transmission into the vertical position.
    4. Fig 3: Last Clutch Housing To Transmission Case & Shift Lever Guide Bolts
    GM2102215Courtesy of GENERAL MOTORS COMPANY
  4. Remove the last 2 clutch housing to transmission case bolts (2).
  5. Remove the shift lever guide bolts (1).
    6. Fig 4: Transmission Case Magnets
    GM2102217Courtesy of GENERAL MOTORS COMPANY
  6. Remove the magnets (1) from the transmission case.
    7. Fig 5: Transmission Case And Select Control Lever Assembly
    GM4062744Courtesy of GENERAL MOTORS COMPANY
  7. Remove the transmission case (1) and the select control lever assembly (2) together as follows:
    1. Remove the select control lever assembly pin.
    2. Slide the transmission case up and off of the gear clusters and the shift shaft components.
    3. Hold the select control lever assembly against the guide plate in order to prevent the release of the detent ball and the spring.
    4. Remove the select control lever assembly from the transmission case.
  8. Remove the gasket (4).
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