What causes sputtering on 2009 Chevrolet Traverse

my 2009 started to sputter two weeks ago. I thought it was bad gas but soon realized it was not. It is worst between 1.5 - 2.5 RPM's. What causes this?

by in Ringwood, NJ on May 25, 2012
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1 answer
ANSWER by , May 25, 2012
possibly a crossfire in the ignition system. do you have a ck eng like on?