K 2500 Suburban 4WD V8-454 7.4L VIN N TBI (1995)
Catalytic Converter: Service and Repair
Close-Couple Converter Replacement
REMOVE OR DISCONNECT
-
Raise the vehicle.
-
Support intermediate exhaust pipe.
1. Oxygen sensor electrical connection (if equipped).
2. Nuts, springs, and flange gasket from exhaust manifold pipe.
3. Nuts and washers from rear exhaust pipe flange to intermediate pipe flange.
4. Catalytic converter assembly.
INSTALL OR CONNECT
Position catalytic converter to intermediate pipe.
1. Washers and nuts onto rear exhaust pipe flange studs. Tighten Nuts to 43 Nm (32 lbs. ft.).
2. Flange gasket, springs, and nuts to exhaust manifold. Tighten Nuts to 29 Nm (22 lbs. ft.).
3. Oxygen sensor electrical connection (if equipped).
-
Check for clearance and alignment.
-
Remove support from intermediate exhaust pipe.
4. Lower the vehicle.
