Chevrolet Uplander P Codes (Powertrain) P0400 - P0499 P0420

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Post O2 Setting Code P0420?

2006 CHEVROLET UPLANDER
P0420 Code Sets. Replaced The Cat Because Of The Milage At A Local Muffler Shop And The Code Continues. Replaced The Post O2 With One From...
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Asked by FZ566QA

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