Help Identifying Trouble Code

By smiledr996s
August 23, 2009 in 1999-2013 Silverado 1500 & Sierra 1500

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smiledr996s

Posted August 23, 2009

Have a check engine light on. Installed Scan Guage and it reads 0420, but the book does not provide codes. Anyone have a list handy? If anyone has a complete list or link that can be posted I would appreciate it.

Thanks

Steve

thearborbarber

Posted August 23, 2009

Scroll down till you find it.

http://www.obd-codes.com/trouble_codes/

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