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Re: Code 0420
Pretty much a P0420 code means replace the catalytic converter.
If your truck has less than 80k on it, the repairs (converter replacement) are covered under your GM warranty at no charge to you.
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Why do you never have enough time or money to do the job right the first time, but enough time and money to do it again?
Got all the certifications
25 years ASE Certified Master Technician
GM WCT
Yea..I work at a DEALERSHIP....got a problem with that?
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Code 0420
