Question about 1995 Chevrolet G20

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G,day own a chev van 1988 g20 5ltr, engin light comes on van running like a pig .Took to a auto shop code 11,12,come up not sure what thay mean any help would appreciated

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I have a Chevy book covering that year. Code12 is the code that flashes to let you know the ECM is working properly and there is no problem. As to the 11 code there is none in the book for that number.

Posted on Mar 02, 2009

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