C 2500 Truck 2WD V8-5.7L VIN R (1997)
Catalytic Converter: Service and Repair
Below 8600 LBS. GVWR
REMOVE OR DISCONNECT
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Raise and support the vehicle.
1. Oxygen sensor electrical connection(s).
2. Nuts and flange gaskets from Y-pipe and exhaust manifold.
3. Nuts and washers from Y-pipe flat flange.
4. Y-pipe and catalytic converter assembly.
INSTALL OR CONNECT
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Position Y-pipe and catalytic converter assembly to flat flange.
1. Washers and nuts to flat flange studs.
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Tighten nuts to 48 Nm (35 ft. lbs.).
2. Flange gaskets and nuts to exhaust manifold.
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Tighten nuts to 65 Nm (48 ft. lbs.).
3. Oxygen sensor electrical connection(s).
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Check for clearance and alignment.
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Lower the vehicle.
