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.

WARNING:

In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

WARNING:

Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury.

Raise and support the vehicle. Lifting and Jacking the Vehicle
Courtesy of GENERAL MOTORS COMPANY

Rear Tire Front Air Deflector Bolt (1) - Remove [2x]
Rear Tire Front Air Deflector-Left Side (2) - Remove
Courtesy of GENERAL MOTORS COMPANY

Rear Wheelhouse Liner Screw (1) - Remove
Underbody Rear Air Deflector Plastic Nut (2) - Remove [3x]
Underbody Rear Air Deflector Bolt (3) - Remove [3x]
Underbody Rear Air Deflector Nut (4) - Remove [2x]
Underbody Rear Air Deflector-Left Side (5) - Remove
Courtesy of GENERAL MOTORS COMPANY

Rear Tire Front Air Deflector Bolt (1) - Remove [2x]
Rear Tire Front Air Deflector-Right Side (2) - Remove
Courtesy of GENERAL MOTORS COMPANY

Rear Wheelhouse Liner Screw (1) - Remove
Underbody Rear Air Deflector Bolt (2) - Remove [3x]
Underbody Rear Air Deflector Plastic Nut (3) - Remove [3x]
Underbody Rear Air Deflector Nut (4) - Remove [2x]
Underbody Rear Air Deflector-Right Side (5) - Remove
Courtesy of GENERAL MOTORS COMPANY

Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Remove [6x]
Floor Panel Reinforcement (2) - Remove
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Catalytic Converter Nut (1) - Remove [2x]
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Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Separate
Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Left Side (3) - Separate
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Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Separate
Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Right Side (3) - Separate
Courtesy of GENERAL MOTORS COMPANY

With the aid of an assistant, remove the exhaust muffler (1).
Catalytic Converter Gasket (2) - Remove and DISCARD
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Rear Wheelhouse Liner Bolt (1) - Remove [2x]
Rear Bumper Fascia Bolt (2) - Remove [7x]
Courtesy of GENERAL MOTORS COMPANY

Exhaust Heat Shield Retainer (1) - Remove [10x]
Exhaust Rear Underbody Heat Shield (2) - Remove