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1999 Chevy Express P0141, P0420 Codes

Last post on May 16, 2009 at 5:22 PM

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#1 of 1 1999 Chevy Express P0141, P0420 Codes by the_baran May 16, 2009 (5:22 pm)
Hi, Anyone have any repair ideas for the following codes? I believe I need to replace OS Sensor Bank 1 Sensor 2 but really have no clue which one that is and how to locate it.   Any Ideas? Thanks!!

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