very odd performance/ 05 3500 LLY crew long

[RipCord]

I was at idle for about ten minutes , when i put it into drive ,nothing happened! no acceleration not even an idle change! So i slammed the brakes and put it in park, then pulled it back down to drive and it ran sluggish ,and it had no power when i hit the gas. so i pulled over popped the hood ,i thought maybe vacuum , i was at a 1/4 tank of fuel and the filter was changed about two weeks ago! it hasnt happened agian! what could it be?

[Mark Rinker]

Could be lots of things. Lets start with the basics:

1) Do you have any dash indicator lights or SES illuminated?
2) Could you have gotten a bad tank of fuel?
3) Check all electrical connections at the throttle. Unlikely, but this is an odd sounding problem...

[Kennedy]

Any mods to the truck? Power modules, etc? Was it excesively hot out?