System To Rich Engine Light

By Midgetv2
April 25, 2011 in 1988-1999 Chevrolet & GMC C/K GMT400 Platform

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Midgetv2

Posted April 25, 2011

got a 98 gmc sierra and every so often i get a check engine light, when i get it looked at its always the same thing, System is too rich banks 1 and 2.

what can i do to solve this cause the guys at all the parts stores around here are not so bright....

i only started to get these lights after i put on my cold air intake.

any help???

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