Installation Procedure

Fig 1: Fasteners, Catalytic Converter And Seal

Courtesy of GENERAL MOTORS COMPANY

Install the catalytic converter (3) to the exhaust manifold with a NEW catalytic converter seal (2).
Hand tighten the catalytic converter to exhaust manifold fasteners (1).

Fig 2: Catalytic Converter Brace Fasteners And Catalytic Converter

Courtesy of GENERAL MOTORS COMPANY

CAUTION:

Install the catalytic converter brace fasteners (1) and tighten to 22 N.m (16 lb ft).

Fig 3: Fasteners, Catalytic Converter And Seal

Courtesy of GENERAL MOTORS COMPANY

Tighten the catalytic converter fasteners (1) to 58 N.m (43 lb ft).
Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement .

Fig 4: Exhaust Front Pipe, Catalytic Converter And Gasket

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Do not twist or damage the flex coupling on the exhaust front pipe.

Install the exhaust front pipe (1) to the catalytic converter (3) with a NEW gasket (2).

Fig 5: Exhaust Front Pipe And Fasteners

Courtesy of GENERAL MOTORS COMPANY

Install the lower catalytic converter fasteners (1) and tighten to 28 N.m (21 lb ft).
Install the exhaust front pipe retainer fastener (2) and tighten to 22 N.m (16 lb ft).
Start the engine and check for exhaust leaks.