Catalytic Converter Replacement - Left Side (LS7)

Fig 1: Catalytic Converter & Mounting Components - Left Side (LS7)

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Remove the engine mount-to-engine mount bracket nuts. Refer to Engine Mount Replacement - Left Side , and Engine Mount Replacement - Right Side . Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
1	Catalytic Converter-to-Exhaust Manifold Nut (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten 50 (37 lb ft)
2	Exhaust Manifold Gasket NOTE: Replace with a NEW gasket.
3	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 .
4	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .
5	Intermediate Pipe
6	Intermediate Pipe Fasteners (Qty: 2) Tighten 27 (20 lb ft)
7	Left Side Catalytic Converter NOTE: The engine will need to be raised for the catalytic converter to clear the exhaust manifold mounting studs.