I searched and didn't really find anything directly related to this problem. My 3.1 has a problem were it hesitates very badly when I first push the gas. It has always done it, but recently it has gotten much worse. Its most noticeable when the motor is cold, and when starting from a dead stop. It also does it when I'm at light throttle, and then step on the gas hard to pass someone. It kind of hesitates for a second before the power comes. From a dead stop, its gotten to the point where its hard to get it moving smoothly off the line without being jerky. Sometimes I'll touch the gas, and nothing will happen for a second, then it will grab suddenly. The motor is in good tune and has new AC Delco plugs and wires. It does not miss at all, just hesitates. I've been told I may need to replace some sensors. What can I do to get rid of this hesitation? Thanks.