lack of power while driving on 2006 Chevrolet Uplander

lack of power while driving with pedal to floor will not go any faster

1 answer
Could be so many things it would be foolish to speculate without being able to do some basic diagnostic tests. Has the Check Engine/Service Engine Soon light been on? If so codes will be stored in the computer of your car that will indicate where the problem is, (you need a scan tool to retrieve the codes). You could have a lack of fuel pressure or a restricted catalytic converter hard to say.