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2015 GMC Sierra 1500 Catalytic Converter
2015 GMC Sierra 1500 catalytic converters remove Carbon monoxide (a poisonous gas) Nitrogen oxides (a cause of smog and acid rain) and Hydrocarbons (a cause of smog) from your ride's exhaust gas. A broken one will result in worse fuel economy and sluggish performance, and in some states it can cause a vehicle to fail emissions testing. Browse 2015 Sierra 1500 catalytic converter replacements and find the right part for the right price at AutoZone.