I have a 2002 GMC with the 6.0 Liter in it and the other day i was taking off from a stop sign when all the sudden there was no power under the throttle. I made it to a place to get off the road and it was running off of what sounded like a couple cylinders. I immediately shut it off. I tried to start it back up and it turned over fine but when it started it was barely running and would die after about 10 seconds. There is gas in the truck and it has oil. ALso the fuel pump turns on properly. What else should i check or do.
