what causes the check engine light to stay on on 2006 Chevrolet Tahoe

I called onstar and they ran a diagonistic and said service the fuel system is that like changing out fuel filter or is it more

by in Orlando, FL on September 02, 2013
1 answer
ANSWER by on September 02, 2013
did they tell you the exact code?and yes there i'd say there is more to it than just changing fuel filter. they were probably just referring that it was a code flagging a fuel system malfunction.
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