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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Exhaust System) >> Repair Instructions >> Exhaust Muffler Replacement (LF4) >> 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. Raise and support the vehicle. Lifting and Jacking the Vehicle
  2. GM5395705Courtesy of GENERAL MOTORS COMPANY

    Rear Tire Front Air Deflector Bolt- Left Side and Right Side (1) - Remove [4x]

  3. Rear Tire Front Air Deflector- Left Side and Right Side (2) - Remove [2x]
  4. GM5400553Courtesy of GENERAL MOTORS COMPANY

    Rear Wheelhouse Liner Bolt- Left Side (1) - Remove

  5. Underbody Rear Air Deflector Nut- Left Side (2) - Remove [3x]
  6. Underbody Rear Air Deflector Bolt- Left Side (3) - Remove [3x]
  7. Underbody Rear Air Deflector Nut- Left Side (4) - Remove [2x]
  8. Underbody Rear Air Deflector- Left Side (5) - Remove
  9. GM5400642Courtesy of GENERAL MOTORS COMPANY

    Rear Wheelhouse Liner Bolt- Right Side (1) - Remove

  10. Underbody Rear Air Deflector Bolt- Right Side (2) - Remove [3x]
  11. Underbody Rear Air Deflector Nut- Right Side (3) - Remove [3x]
  12. Underbody Rear Air Deflector Nut- Right Side (4) - Remove [2x]
  13. Underbody Rear Air Deflector- Right Side (5) - Remove
  14. GM5400756Courtesy of GENERAL MOTORS COMPANY

    Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Remove [6x]

  15. Floor Panel Reinforcement (2) - Remove
  16. GM5865265Courtesy of GENERAL MOTORS COMPANY

    Catalytic Converter Nut (1) - Remove [2x]

  17. GM5865271Courtesy of GENERAL MOTORS COMPANY

    Exhaust Pipe Clamp (1) - Loosen [2x]

  18. GM5406578Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Separate [2x]

  19. GM5406632Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Separate [2x]

  20. GM5865287Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  21. GM5865293Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  22. GM5865300Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The rear bumper fascia is removed for illustration purposes only.

    Exhaust Muffler Hanger Bracket Nut (1) - Remove [4x]

  23. GM5865329Courtesy of GENERAL MOTORS COMPANY

    With the aid of an assistant, remove the exhaust muffler (1).

  24. Catalytic Converter Gasket (2) - Remove and DISCARD
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