Hey peeps thanks in advance for any helpful advice! My 2006 Chevy uplander is riding a little rough. Not while accelerating but while i am driving on the highway or speeds over 45. It hesitates or skips my rpm gauge dips for a second then fine. this tends to happen ever 15 to 30 seconds. I thought it may be the fuel filter but because the filter is in the tank its hard to know. Before i take to a shop i wanted to know if you all have any ideas for me. thx!!!