I am going to ask for the collective knowledge of this forum to help me out here. I have a 98, GMC Jimmy 4x4 2dr. 150k. I was driving around tonight running a few errands. I had been driving for about an hour or so and was heading home. The truck truck ran good the entire time I was driving it, it does have a small misfire that I'm trying to track down, but that's another story. I was coming down the road, the truck wasn't making any funny noises or running funny whatsoever. Then I hit an unavoidable bump in the road (it wasn't a large one, mind you) The truck lost power as soon as I hit the bump like it was running out of gas. I pulled over, killed it, let it sit for a second and tried it, it fired on the second crank. I gave it a little gas to get the rpm's up and it seemed fine. Put it in drive to take off and it started chugging like it was running out of fuel. ( I know it has gas in it, I'm putting some in it in the morning to be sure ) I made it about another 1.4 mile trying to limp it home and it died again. This time when I pulled over and tried to restart it, it turns over and turns over but won't fire. Fuel pump has power and is kicking on. Alternator is good, Battery is good. Did a check for loose connection / hoses that may have come unhooked, everything checks out. Going to get under it tomorrow and look again. Coil pack possibly ? Cap and rotor ? Looking for some info. Thanks.