Installation 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.

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Catalytic Converter Brace Bracket (2) - Install

CAUTION:

Refer to Fastener Caution .

Catalytic Converter Brace Bracket Bolt (1) - Install and tighten [2x] - Fastener Specifications
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Catalytic Converter Brace Bracket (2) - Install
Catalytic Converter Brace Bracket Nut (1) - Install and tighten [2x] - Fastener Specifications
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Exhaust Pipe Clamp (1) - Install NEW but do NOT tighten
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Catalytic Converter Gasket (2) - Install NEW
Warm Up Three-Way Catalytic Converter (1) - Install
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Catalytic Converter Brace Bolt (1) - Install, but do NOT tighten
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Catalytic Converter Brace Bolt (1) - Install, but do NOT tighten
Lower the vehicle.
Connect the heated oxygen sensor -sensor 2 electrical connector.
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NOTE:
Use hand tools only when tightening the exhaust pipe clamp.

Exhaust Pipe Clamp (1) - Tighten - Fastener Specifications
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Catalytic Converter Brace Bolt (1) - Tighten - Fastener Specifications
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Catalytic Converter Brace Bolt (1) - Tighten - Fastener Specifications
Raise and support the vehicle.
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Catalytic Converter Gasket (2) - Install NEW
Install the exhaust muffler (1) to the warm up three-way catalytic converter.
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Catalytic Converter Nut (1) - Install and tighten [2x] - Fastener Specifications
Lower the vehicle.
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Catalytic Converter Heat Shield (1) - Install
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Catalytic Converter Heat Shield Nut (2) - Install and tighten - Fastener Specifications
Catalytic Converter Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
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Turbocharger Heat Shield (1) - Install
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Turbocharger Heat Shield Bolt (1) - Install [3x] - Fastener Specifications
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NOTE:
A special anti-seize compound is used on the heated oxygen sensor threads. The compound consists of liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound already applied to the threads. IF a sensor is removed and is to be reinstalled, the threads MUST have an anti-seize compound applied before installation. Adhesives, Fluids, Lubricants, and Sealers

CAUTION:
Refer to Component Fastener Tightening Caution .

Using the J-39194 - C Heated Oxygen Sensor Remover/Installer, install the heated oxygen sensor -sensor 1 (1). Fastener Specifications
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Connect the heated oxygen sensor -sensor 1 electrical connector (1).
Inspect the exhaust system for leaks.