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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Manual Transmission - TREMEC 6-Speed (Mg9 M3L)) >> Repair Instructions - Off Vehicle >> Transmission Case and Clutch Housing Assemble (MG9) >> Transmission Case

Transmission Case

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: lst/2nd, 3rd/4th Shift Shaft Bushings
    GM1938414Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The end of the bearing that has numbers stamped on it must face the J 44384  bearing installer , so that the numbers are visible when the bearing is installed.

  1. Install the 1st/2nd and the 3rd/4th shift shaft bearing. Use the J 36190  driver handle (1) and the J 44384  bearing installer (2).
  2. Fig 2: Installing Mainshaft Bearing Race
    GM2102269Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Bearings and Races are replaced as sets.

  3. Install the mainshaft bearing race (3), using the J 8092  driver handle (1) and the J 39435  installer (2).
  4. Fig 3: Installing Countershaft Bearing Race
    GM2102270Courtesy of GENERAL MOTORS COMPANY
  5. Install the countershaft bearing race (3), using the J 8092  driver handle (1) and the J 39435  installer (2).
  6. Fig 4: Locating Dowel Pins
    GM2102252Courtesy of GENERAL MOTORS COMPANY
  7. Install the dowel pins (1).
  8. Fig 5: Applying Sealant To Threads Of Transmission Case Fill Plug, Temperature Sensor & Cooler Line Return Fitting
    GM2102272Courtesy of GENERAL MOTORS COMPANY
  9. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the threads of the transmission case fill plug (1), the temperature sensor (3) and the cooler line return fitting (2).
  10. Fig 6: Identifying Cooler Line Return Fitting, Fill Plug & Coolant Temperature Sensor
    GM2102250Courtesy of GENERAL MOTORS COMPANY
  11. Install the transmission case cooler line return fitting (1) and tighten to 18 N.m (13 lb ft).
  12. Install the transmission case fill plug (2) and tighten to 27 N.m (20 lb ft).
  13. Install the coolant temperature sensor (3) and tighten to 39 N.m (29 lb ft).
  14. Fig 7: Identifying Detent Guide Plate & Attaching Bolts
    GM2102249Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    The H-pattern on the guide plate must face the extension housing. If the guide plate is installed incorrectly, then damage will occur.

  15. Install the guide plate (2) and the guide plate bolts (1) and tighten to 22 N.m (16 lb ft)