Thread: Car Threw A P0420 Code

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#15 Re: Car Threw A P0420 Code
Slick2500

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12-05-2014

Flashing SES light +hesitation while accelerating + p0420 = cat needs replaced.

2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.

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catalyst system, catalytic converter, efficiency, p0420, spark plugs

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