LLY: Hicup and stumble at idle

[shark1]

Hey guys seem to be running into a little issue when i come to a stop light foot on the brake I seem to get a bit of a stumble at idle, I can feel it in the truck kinda like a light misfire, right now no codes present dosen't seem to be down on power and no smoke any ideas?

thanks for the help .

 

[LarryJewell]

did you change the pw in the idle range

 

[shark1]

did you change the pw in the idle range

PW ? Could you explain please, currently have a stock truck except for an EGR block