C 2500 Suburban 2WD V8-6.0L VIN U (2002)
Notice: Refer to Fastener Notice in Cautions and Notices.
1. If the catalytic converter was replaced, perform the following:
1.1.
Apply anti-seize compound GM P/N 12377953 or equivalent to the threads of the old oxygen sensors.
1.2.
Install the oxygen sensors.
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Tighten the oxygen sensors to 42 Nm (31 ft. lbs.).
2. Install a NEW exhaust seal to the exhaust manifold.
3. Install the catalytic converter.
Slide the catalytic converter hanger into the exhaust pipe hanger bracket.
4. Install the left exhaust manifold pipe nuts.
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Tighten the exhaust manifold pipe nuts to 50 Nm (39 ft. lbs.).
