My truck is shuddering at mid throttle *sometimes*. I don't know if it's a specific gear or not, but it seems to be most common when going from 0 throttle or 10% to 40-60% throttle. Has happened from a stop, and on highway. Idle is pretty normal, and sometimes it doesn't do it.

I've ruled out 'bad' gas', but that's about it. Where should I start?

 

Just out of curriosity I switched to my Winter program. That made it MUCH worse. ???

 

my truck was doing something similiar,only during steady
throtle ,idled fine and ran fine,but felt like it was running
out gas. dealer changed the dpsv sensor ,i think thats
what they called it, something to do with the egr.

 

Well... My EGR equipment is still all connected, but is turned off in chip... Would that sensor still matter considering those facts?

 

i had a shuddering problem after i had my headgasket done, turned out to be a bad coil
took it back to the dealer the same day i got it back they put it on the computer and replaced the coil no problem
mine was the # 8 if you care to know