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.

CAUTION:

Refer to Heated Oxygen and Oxygen Sensor Caution .

CAUTION:

The use of excessive force may damage the threads in the exhaust manifold/pipe.

NOTE:

The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the sensor.
The heated oxygen sensor MAY be difficult to remove when the engine temperature is less than 48°C (120°F).

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Disconnect and reposition electrical connectors as necessary.
Using the EN-6179 Heated Oxygen Sensor Remover/Installer, remove the heated oxygen sensor (1).
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Turbocharger Heat Shield Bolt (1) - Remove [3x]
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Turbocharger Heat Shield (1) - Remove
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Catalytic Converter Heat Shield Bolt (1) - Remove [2x]
Catalytic Converter Heat Shield Nut (2) - Remove
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Catalytic Converter Heat Shield (1) - Remove
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Disconnect and reposition electrical connectors as necessary.
Using the EN-6179 Heated Oxygen Sensor Remover/Installer, remove the heated oxygen sensor (1).
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Exhaust Pipe Clamp (1) - Loosen
Raise and support the vehicle. Lifting and Jacking the Vehicle
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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
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{ If equipped } Front Crossmember Brace Nut (1) - Remove [4x]
{ If equipped } Front Crossmember Brace (2) - Remove
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Exhaust Muffler (1) - Remove
Catalytic Converter Gasket (2) - Remove and DISCARD
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Catalytic Converter Brace Bolt (1) - Remove
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Catalytic Converter Brace Bolt (1) - Remove
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Warm Up Three-Way Catalytic Converter (1) - Remove
Catalytic Converter Gasket (2) - Remove and DISCARD
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Exhaust Pipe Clamp (1) - Remove and DISCARD
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Front Axle Propeller Shaft Heat Shield Bolt (1) - Remove [2x]
Front Axle Propeller Shaft Heat Shield Stud (2) - Remove
Front Axle Propeller Shaft Heat Shield (3) - Remove