1998 Chevy Truck Motor Problems

When I first turn my truck on it seems to run normal and drive normal. But the more I drive it aftarwards is when the problem occurs and gets worse and worse. It starts to bog down the more gas I give it and cut out, but only after I drive it for a little while. When this happens I turn the truck off and when I turn it back on, it seems to be back to normal for a little while longer. I have changed spark plugs, distributor cap and rotor, both oxygen sensors, control module, and the coil but none of this has helped so far. I really hope someone can help me figure this out.