OEM 2007 Cadillac STS Catalytic Converter

2007 Cadillac STS Catalytic Converter Parts Questions & Experts Answers

• Q: How to replace the right side catalytic converter (LY7) on 2007 Cadillac STS?

  A: The replacement of right side Catalytic Converter (LY7) begins by removing the right bank exhaust manifold heat shield and Catalytic Converter nuts. Rise the vehicle and support it while you also extract the front driveshaft if your model has all wheel drive functionality. Use tools to disconnect both the Oxygen Sensor electrical connector and the muffler pipe from both left and right side catalytic converters. First remove the fasteners from the Exhaust Pipe leading to right bank Catalytic Converter before carefully extracting both the Catalytic Converter and Oxygen Sensor together with the seal/heat shield from the exhaust manifold. Remove the Oxygen Sensor which is connected to the Catalytic Converter. To begin with handle the Oxygen Sensor setup on the Catalytic Converter while examining the seal/heat shield's sealing surface for damage or wear then replace if necessary. Start by placing the Catalytic Converter within the exhaust manifold then secure it with fasteners after attaching both the heat shield and seal to the converter. Attach the Oxygen Sensor electrical wires while checking the Catalytic Converter seal for damage before replacing it as needed. Tighten the muffler nuts that attach the pipes to each side Catalytic Converter until they reach 22 n.m (16 lb ft) of torque. At this point if awd exists in the system the technician should reinstall the front driveshaft then lower the vehicle before applying 50 n.m (37 lb ft) of torque to the Catalytic Converter nuts. Finish your work by putting back the right bank exhaust manifold heat shield.