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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 - On Vehicle >> Shift Control Assembly Replacement (MG9) >> Installation Procedure

Installation Procedure

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.
    NOTE:

    Before installing the shifter, ensure that the shift shaft it is clean of dirt or lubricants.

  1. Install the shift control assembly to the transmission.
    2. Fig 1: Right Side Shift Control Rod Pin Retaining Tab
    GM3631979Courtesy of GENERAL MOTORS COMPANY
  2. Install the right shift control assembly rod pin (1).
    3. Fig 2: Transmission Boss, Shift Control Rod Pin & Retaining Tab
    GM3631969Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  3. Install the left shift control assembly rod pin (2).
    4. Fig 3: Shift Linkage Pin And Retaining Clip
    GM4032059Courtesy of GENERAL MOTORS COMPANY
  4. Install the shift linkage pin (3).
  5. Install the shift linkage retaining clip (1).
    6. Fig 4: Transmission Support Fasteners
    GM2243401Courtesy of GENERAL MOTORS COMPANY
  6. Raise the transmission.
  7. Install the 4 transmission support fasteners (2), then tighten to 60 N.m (44 lb ft).
  8. Remove the jack supporting the transmission.
  9. Install the propeller shaft. Refer to Two-Piece Propeller Shaft Replacement (LF4)
  10. Lower the vehicle.
    11. Fig 5: Closeout Boot
    GM4168472Courtesy of GENERAL MOTORS COMPANY
  11. Pull up and outward on the tabs on the closeout boot (1) to clear the body structure.
    12. Fig 6: Shift Control Assembly Fasteners
    GM4257747Courtesy of GENERAL MOTORS COMPANY
  12. Install the 4 fasteners (1) securing the shift control assembly to the tunnel reinforcement, then tighten to 12 N.m (106 lb in)
    13. NOTE:

    Ensure the directional arrow on the boot in installed pointing to the front of the vehicle. If it is installed backwards it will create a squeak.

  13. Install the upper shifter closeout boot to the lower closeout boot.
  14. Install the front floor console trim plate. Refer to Front Floor Console Trim Plate Replacement
    15. Fig 7: Transmission Control Lever Boot And Shift Knob Fastener
    GM4167934Courtesy of GENERAL MOTORS COMPANY
  15. Install the shift control knob. Refer to Transmission Control Lever Knob Replacement 
  16. Perform the gear position relearn. Refer to Gear Position Sensor Learn 
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