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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 250 (Manual Transmission - TREMEC 6-Speed (MJK)) >> Repair Instructions - On Vehicle >> Transmission Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Note the new transmission unique number (TUN).
  2. WARNING:

    Use care when cleaning the clutch hub. The clutch hub may have sharp edges and can cause personal injury if contact is made. Wear protective gloves to avoid personal injury.

  3. Clean the clutch hub and the input shaft from any debris and contaminates with a lint-free towel.
  4. GM2665890Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Applying too much or the wrong type of grease on the transmission input shaft may cause damage, clutch slippage or failure. Always apply the correct type of grease. Never apply more grease than is necessary to coat the transmission input shaft with a very thin film of grease.

    Use a clean flat brush (1) to apply very light coating of multi-purpose grease to input shaft until the metal is only shiny. No visible clumps of grease are permissible regardless of size.

  5. GM2665891Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Ensure that no grease remains on the lead surface of the transmission input shaft. Clean the lead surface of the transmission input shaft prior to the assembly of the transmission to the engine. Failure to maintain a clean surface may cause clutch slippage or failure.

    Clean the entire lead surface of the input shaft with a NEW, lint-free towel (1).

  6. Raise the transmission to the engine.
  7. GM4204853Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Install the two transmission bolts (1, 3) and transmission stud (2) and tighten to 50 N.m (37 lb ft).

  8. GM4204722Courtesy of GENERAL MOTORS COMPANY

    Install the right transmission stud (1) and tighten to 50 N.m (37 lb ft).

  9. GM4204065Courtesy of GENERAL MOTORS COMPANY

    Install the two transmission bolts (1, 2) and tighten to 50 N.m (37 lb ft).

  10. GM4204785Courtesy of GENERAL MOTORS COMPANY

    Install the left side transmission bolt (2) and transmission stud (1) and tighten to 50 N.m (37 lb ft).

  11. GM4921039Courtesy of GENERAL MOTORS COMPANY

    Connect the wiring harness retainers (1) to the transmission clutch housing.

  12. Connect the transmission control to the transmission. Manual Transmission Control Replacement 
  13. Tilt engine and transmission up and tighten all cradle bolts. Drivetrain and Front Suspension Cradle Replacement (RWD LSY)Drivetrain and Front Suspension Cradle Replacement (AWD LSY)Drivetrain and Front Suspension Cradle Replacement (RWD LGY)Drivetrain and Front Suspension Cradle Replacement (AWD LGY)
  14. Front Wheelhouse Liner- Left Side and Right Side - Install - Front Wheelhouse Liner ReplacementFront Wheelhouse Liner Replacement (Blackwing)
  15. Connect the intermediate steering shaft to the mid intermediate steering shaft. Mid Intermediate Steering Shaft Replacement (AWD)Mid Intermediate Steering Shaft Replacement (RWD)
  16. Uncap the fittings and unplug the holes of the transmission.
  17. GM5877956Courtesy of GENERAL MOTORS COMPANY

    Connect the clutch actuator cylinder pipe (3) to the clutch master cylinder pipe.

  18. Install the clutch actuator cylinder pipe retaining clip (1) to the clutch master cylinder pipe.
  19. GM4203412Courtesy of GENERAL MOTORS COMPANY

    Connect the electrical connectors. (1, 2, 3, 4)

  20. GM5866958Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe (2) - Install

  21. Transmission Fluid Cooler Pipe (2) - Connect
  22. Transmission Fluid Auxiliary Cooler Outlet PipeRetainer Clip (1) - Engage [2x]
  23. Transmission Fluid Cooler Pipe Bracket Bolt (3) - Install and tighten 22 N.m (16 lb ft)
  24. Transmission Fluid Cooler Pipe Bolt (4) - Install and tighten 22 N.m (16 lb ft)
  25. Bleed to hydraulic clutch system. Hydraulic Clutch System Bleeding
  26. Check the transmission fluid level. Transmission Fluid Level Inspection 
  27. GM4093174Courtesy of GENERAL MOTORS COMPANY

    Install the catalytic converter brace bracket (3). Catalytic Converter Brace Bracket Replacement (LT4)