Installation Procedure

Fig 1: Catalytic Converter

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Clean and lubricate the exhaust rods for ease of installation.

With the help of a second technician, install the right catalytic converter (2) to the cylinder head with a NEW gasket (3) and loosely tighten the fasteners (1).

Fig 2: Exhaust Muffler & Isolators

Courtesy of GENERAL MOTORS COMPANY

Fig 3: Exhaust Muffler, Catalytic Converter & Mounting Components

Courtesy of GENERAL MOTORS COMPANY

CAUTION:

Install the exhaust muffler (4) to the left catalytic converter (3) with a NEW gasket (2). Tighten the fasteners (1) to 50 N.m (37 lb ft).

Fig 4: Exhaust Muffler, Isolators & Bracket Fasteners

Courtesy of GENERAL MOTORS COMPANY

Install the rear exhaust isolator brackets (2) to the frame and tighten the fasteners (1) to 40 N.m (30 lb ft).

Fig 5: Catalytic Converter

Courtesy of GENERAL MOTORS COMPANY

Fig 6: Catalytic Converter Brace Bracket & Fasteners

Courtesy of GENERAL MOTORS COMPANY

Install the catalytic converter brace bracket (2) and tighten the fasteners (1) to 22 N.m (16 lb ft).

Fig 7: Floor Panel Cross Bar & Fasteners

Courtesy of GENERAL MOTORS COMPANY

Install the floor panel cross bar (2) and tighten the fasteners (1) to 22 N.m (16 lb ft).
Connect the heated oxygen sensor - bank 1 sensor 1. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 .
Connect the heated oxygen sensor - bank 1 sensor 2. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .
Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .