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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 101 (Transmission Cooling System) >> Repair Instructions >> Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LF4 with MHU) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Battery Negative Cable Disconnection and Connection
  2. Place shop cloths beneath the radiator surge tank outlet pipe connection points to absorb any potential coolant spillage.
  3. GM5861123Courtesy of GENERAL MOTORS COMPANY

    Radiator Surge Tank Inlet Hose Clamp (1) @ Radiator Surge Tank Inlet Hose - Disengage - Hose Clamp Replacement Guidelines - Spring Type

  4. Radiator Surge Tank Inlet Hose Clip (2) @ Engine Control Module Bracket - Remove
  5. Radiator Surge Tank Inlet Hose Clamp (4) @ Engine Radiator - Disengage - Hose Clamp Replacement Guidelines - Spring Type
  6. Radiator Surge Tank Outlet Pipe (3) - Remove
  7. Remove the shop cloths from beneath the radiator surge tank outlet pipe.
  8. GM5839234Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Always turn the ignition off when installing or removing the ECM connectors in order to prevent damage to the components.

    CAUTION:
    • Turn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module in order to prevent internal control module damage.
    • Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables, or when charging the vehicle battery.
    • In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board.
    • Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets, and ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module.

    Disconnect the electrical connectors.

  9. Use a suitable tool to release the locking tabs securing the engine control module to the engine control module bracket.
  10. Engine Control Module (1) - Remove
  11. GM5839232Courtesy of GENERAL MOTORS COMPANY

    Engine Control Module Bracket Bolt (1) - Remove [3x]

  12. GM5839233Courtesy of GENERAL MOTORS COMPANY

    Use a suitable tool to release the locking tab and remove the transmission control module (1) by sliding it out from the engine control module bracket (2).

  13. Engine Control Module Bracket (2) - Remove
  14. GM5864524Courtesy of GENERAL MOTORS COMPANY

    Radiator Air Upper Baffle Retainer (1) - Remove [5x]

  15. Radiator Air Upper Baffle Bolt (2) - Remove [2x]
  16. Radiator Air Upper Baffle- Upper (3) - Remove
  17. GM5839407Courtesy of GENERAL MOTORS COMPANY

    Remove all wiring harness retainers from the front end sheet metal cross braces.

  18. Front End Sheet Metal Cross Brace Bolt- Left Side and Right Side (1) - Remove [6x]
  19. Front Suspension Strut Upper Mounting Nut- Left Side and Right Side (2) - Remove [4x]
  20. Front End Sheet Metal Cross Brace- Left Side and Right Side (3) - Remove [2x]
  21. GM5864667Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Clamp (1) - Loosen

  22. Air Cleaner Outlet Duct (2) - Reposition
  23. Air Cleaner Outlet Duct Clamp (3) - Loosen
  24. Auxiliary Air Cleaner Outlet Duct (4) - Reposition
  25. GM5862960Courtesy of GENERAL MOTORS COMPANY

    Disconnect the 2 mass airflow sensor electrical connectors.

  26. Remove all retainers from the air cleaner assembly and reposition wiring harnesses as necessary.
  27. Air Cleaner Bolt (1) - Remove
  28. Air Cleaner Assembly (2) - Remove
  29. Raise and support the vehicle. Lifting and Jacking the Vehicle
  30. GM5408645Courtesy of GENERAL MOTORS COMPANY

    Front Bumper Fascia (1) - Remove - Front Bumper Fascia Removal and Installation (without Blackwing) , or Front Bumper Fascia Removal and Installation (with Blackwing) , or Front Bumper Fascia Removal and Installation (with Blackwing CFV, CFZ)

  31. Place a drain pan under the vehicle.
  32. GM5862934Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Bracket Bolt (1) - Remove

  33. GM5863963Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Connector Bolt (1) - Remove

  34. GM5863966Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Bracket Bolt (1) - Remove

  35. GM5864341Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Bolt (1) - Remove

  36. Transmission Fluid Cooler Inlet and Outlet Pipe (2) - Disconnect
  37. Transmission Fluid Cooler Seal (3) - Remove and DISCARD
  38. GM5864353Courtesy of GENERAL MOTORS COMPANY

    Retaining Clip (3) - Disengage [2x]

  39. Transmission Fluid Cooler Inlet and Outlet Pipe (2) - Disconnect [2x]
  40. GM5867466Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Bracket Bolt (1) - Remove

  41. GM5862788Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Nut (3) - Remove

  42. Transmission Fluid Cooler Inlet and Outlet Pipe (1) - Disconnect
  43. Transmission Fluid Cooler Seal (2) - Remove and DISCARD
  44. Transmission Fluid Cooler Inlet and Outlet Pipe (1) - Remove
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