K 1500 Suburban 4WD V8-5.7L VIN R (1997)
Catalytic Converter: Service and Repair
8600 LBS. and Over 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.
5. Muffler and catalytic converter assembly.
INSTALL OR CONNECT
1. Muffler and catalytic converter assembly.
2. Y-pipe and catalytic converter assembly.
3. Washers and nuts to Y-pipe flat flange.
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Tighten nuts to 48 Nm (35 ft. lbs.).
4. Flange gaskets and nuts to exhaust manifold.
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Tighten nuts to 65 Nm (48 ft. lbs.).
5. Oxygen sensor electrical connection(s).
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Check for clearance and alignment.
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Lower the vehicle.
