Dirty Idle Air control perhaps?

 

maybe....dunno its done this three times over the last three months.... then it clears up and is fine

 

hey u outta check out what i said before man. mine had full power in the cab but i dont think was getting enough charge to keep the engine going. it would start and die imediately... but if i consistently gave it throttle or held it steady the truck would continue to run. i kept my foot on the petal hopin to charge the batt or something but it would just die... i played with the ground and it started up and no problem since. (just my 2cents again)