dbw throttle body is more than likely the cause for that

 

I am test driving an '07 this week and it does the same thing...floor it and it thinks about it for a few seconds and then starts to go. Haven't tried it when it is cold though since I don't want to hurt a truck I might buy.

 

why would you rev up a new truck when its cold. i remember you had to do that to the old carbureted cars and trucks. but why on a new truck.

 

yeah all 07s have a delay when you floor it its....but thanks to a tune it wont ever do it again