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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 Assemble (MG9) >> Transmission Case Installation

Transmission Case Installation

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: Transmission Case And Select Control Lever Assembly
    GM4062744Courtesy of GENERAL MOTORS COMPANY
  1. Install the gasket (4).
  2. Do the following in order to install the transmission case and the select control lever assembly:
    1. Shift the transmission into NEUTRAL in order to keep the 3rd/4th shift shaft from engaging.
    2. Install the select control lever assembly (2), through the transmission case opening, while sliding the transmission case (1) onto the gear clusters and the shift rail components.
    3. Install the select control lever assembly pin (3).
  3. Fig 2: Applying Sealer To Shift Lever Guide Bolts Threads
    GM350592Courtesy of GENERAL MOTORS COMPANY
  4. Apply threadlock or equivalent to the threads of the shift lever guide bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers (MG9) 
  5. Fig 3: Shift Lever Guide Bolts
    GM2102304Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    In order to align the shift interlock plate slot with the shift lever guide bolt holes, pull up on the 5th/6th and reverse shift rail assembly while installing the shift lever guide bolts.

  6. Install the shift lever guide bolts (1) while pulling up on 5th/6th and reverse shift rail assembly. Tighten the bolts to 27 N.m (20 lb ft).
  7. Fig 4: Clutch Housing To Transmission Case Bolts
    GM2102214Courtesy of GENERAL MOTORS COMPANY
  8. Install the clutch housing to transmission case bolts (1) and tighten to 48 N.m (36 lb ft).
  9. Install the clutch concentric actuator cylinder. Refer to Clutch Concentric Actuator Cylinder Replacement .
  10. Fig 5: Installing Magnet
    GM4598797Courtesy of GENERAL MOTORS COMPANY
  11. Apply adhesive to the magnet, then Install the magnet (1) into the transmission case. Refer to:Adhesives, Fluids, Lubricants, and Sealers (MG9) 
  12. Fig 6: Shift Detent Assembly
    GM2102212Courtesy of GENERAL MOTORS COMPANY
  13. Install the shift detent assembly (1) and tighten to 40 N.m (30 lb ft).