I have an 04 with 120K on the clock and started having an issue a few days ago. I let the truck idle for about an hour, went for a ride everything seemed fine came to the first stop sign go to take off and truck has no power bucking and jerking bad. I held the petal to the floor and once it built boost cleaned its self out. ran fine for 3-4 days on the way home today, took off from a red light samething bucking and jerking, held it to the floor built boost and cleaned out again. I was thinking veins, or egr sticking. Any help would be great. I dont have a scaner and there is no cel on. Thanks again.