Re: On Board diagnostics code P0430
My dealer told me that all GM vehicles have a 80K warranty on Cats. They are required to have it. I am looking at my service records. Looks like the code i threw was P0420: Low Efficiency Bank1.
Tech notes: replaced left side cat. Convertor
This was done at 54K miles. total work billed to $570.
Customer Cost: $0
I do not have an extended warranty.
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