GM 15083262 Catalytic Converter Assembly (W/ Exhaust Manifold Pipe)

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The catalytic converter is an emission control device added to the exhaust system to reduce pollutants from the exhaust gas stream. A three-way (reduction) catalyst design is used. The catalytic coating on the three-way catalyst contains platinum and rhodium, which lowers the levels of oxides of nitrogen (NOx) as well as hydrocarbons (HG) and carbon monoxide (CO). The test equipment for a catalytic converter is expensive and highly sophisticated. If you suspect that the converter on your vehicle is malfunctioning, take it to a dealer or authorized emissions inspection facility for diagnosis and repair. To replace the converter, raise the vehicle and support it securely on jackstands. Remove the bolts and detach the catalytic converter header pipe from the exhaust manifold. Remove the catalytic converter-to-exhaust pipe flange bolts and separate the exhaust pipe from the catalytic converter. Support the exhaust pipe. Remove the catalytic converter and pipe assembly. Clean the carbon deposits from the mounting flanges. Installation is the reverse of removal. Note: Because of a Federally mandated warranty which covers emissions-related components such as the catalytic converter, check with a dealer service department before replacing the converter at your own expense.