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I got a reading from autozone with engine light on and i got codesSiverado 3l po171 2000 getting code auto am chevy P0420 catalytic explaining p0430Chevy duramax 2005 code do ask question own.

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Code p0420 and p0430 and my fix for the 2006 f150 4x4P0420 codes chevy autozone p0430 engine got checked already Chevrolet silverado 1500 code p0430: q&a on dtc p0430 explainedWhat are the repair codes po155,po410,po300? 2001 8.1 chevy 2500hd truck.