Installation Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Exhaust System Components

Courtesy of GENERAL MOTORS CORP.

Install the HO2S to the exhaust system. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 and Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 .
Install the muffler rear hangers (2) to the muffler(s).

Fig 2: View Of Exhaust System

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Exhaust System Inspection Notice .

NOTE: Refer to Flex Decoupler Notice .

With the aid of an assistant, raise the exhaust system into position.
Install the exhaust system (muffler) nuts.

Fig 3: View Of Mufflers & Hanger Rods

Courtesy of GENERAL MOTORS CORP.

Install the mufflers to the muffler rear hangers.

Fig 4: View Of Right Muffler Hanger & Frame Hanger Rod

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Install the right muffler front hanger to the frame hanger rod.

Fig 5: View Of Muffler Front Hanger & Frame Hanger Rod

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Install the left muffler front hanger to the frame hanger rod.

Fig 6: Identifying Muffler Pipes At Left And Right Side Catalytic Converters

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NOTE: Refer to Fastener Notice .

Install the exhaust pipe nuts.
Tighten: Tighten the nuts to 22 N.m (16 lb ft).

Fig 7: Floorpan Brace

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Install the floor panel tunnel brace to the floor panel.
Install the floor panel tunnel brace bolts.
Tighten: Tighten the floor panel tunnel brace bolts to 25 N.m (18 lb ft).

Fig 8: View Of HO2S Electrical Connector, Sensor 2 (Bank 1 Shown, Bank 2 Similar)

Courtesy of GENERAL MOTORS CORP.

Connect the left and right bank 2 HO2S electrical connectors (bank 1 shown, bank 2 similar).
Install the HO2S wiring harnesses to the transmission case.
Lower the vehicle.