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Malibu Another long running GM name, the Malibu has overcome many changes to be one of the top mid size sedans heading into its eight generation.

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Platform: N-, Epsilon, Epsilon II.

p0420 code

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Old October 20th, 2007, 1:07 AM
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Default p0420 code
I replaced both o2 sensors and installed three different universal catalytic convertors and I still get the P0420 code on my 2001 Malibu. What now?
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