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

Removal Procedure

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: Transmission Control Lever Boot
    GM4167934Courtesy of GENERAL MOTORS COMPANY
  1. Remove the shift control knob (1). Transmission Control Lever Knob Replacement 
  2. Place the shifter in the Neutral position.
  3. Remove the front floor console trim plate. Front Floor Console Trim Plate Replacement
  4. Remove the upper shifter closeout boot from the lower closeout boot.
    5. Fig 2: Shift Control Assembly Fasteners
    GM4257747Courtesy of GENERAL MOTORS COMPANY
  5. Remove the 4 fasteners (1) securing the shift control assembly to the tunnel reinforcement.
    6. Fig 3: Closeout Boot
    GM4168472Courtesy of GENERAL MOTORS COMPANY
  6. Push the tabs on the closeout boot (1) inward and down to clear the body structure.
  7. Raise the vehicle. Lifting and Jacking the Vehicle (Base)Lifting and Jacking the Vehicle (V-Series)
  8. Remove the propeller shaft. Two-Piece Propeller Shaft Replacement (LTG, LGX, LCV)Two-Piece Propeller Shaft Replacement (LF4)
    9. Fig 4: Shift Linkage Pin
    GM4032059Courtesy of GENERAL MOTORS COMPANY
  9. Remove the shift linkage retaining clip (1).
  10. Remove the shift linkage pin (3).
  11. Support the transmission with a suitable jack.
    12. Fig 5: Identifying Transmission Support Fasteners
    GM2243401Courtesy of GENERAL MOTORS COMPANY
  12. Remove the 4 fasteners (2) securing the transmission support. Transmission Support Replacement (Automatic RWD)Transmission Support Replacement (Automatic AWD)Transmission Support Replacement (Manual)
  13. Lower the transmission assembly to gain access to the top of the transmission.
    14. Fig 6: Transmission Boss, Shift Control Rod Pin & Retaining Tab
    GM3631969Courtesy of GENERAL MOTORS COMPANY
  14. Using a suitable flat-blade tool, release the left side shift control rod pin retaining tab (1), while sliding the pin outward. The pin will lock again at the outer transmission boss (3). Using a suitable flat-blade tool, insert the tool between the boss (3) and the rubber mount on the shift control assembly to release the shift control rod pin retaining tab to slide it further out of the transmission boss. Reposition the transmission slightly to allow extra clearance to completely remove the pin.
    15. Fig 7: Right Side Shift Control Rod Pin Retaining Tab
    GM3631979Courtesy of GENERAL MOTORS COMPANY
  15. Using a suitable flat-blade tool, release the right side shift control rod pin retaining tab (1), while sliding the pin outward. The pin will lock again at the outer transmission boss. Using a suitable flat-blade tool, insert the tool between the boss and the rubber mount on the shift control assembly to release the shift control rod pin retaining tab to slide it further out of the transmission boss. Reposition the transmission slightly to allow extra clearance to completely remove the pin.
    16. Fig 8: Shift Control Assembly Lower Fasteners
    GM3631956Courtesy of GENERAL MOTORS COMPANY
  16. Loosen the two lower fasteners (1) on the shift control assembly enough to allow the removal of the shift control assembly.
  17. Remove the shift control assembly from the transmission.
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