I still havent found a fix for this. I've had it to 3 different dealships and forked out hundreds of dollars cause I can't seem to find anything "wrong" with it. Mine does the same exact thing. When you floor it it's like all the power is gone but if you feather the throttle slowly to raise the rpms it seems to work fine. I've seriously and literally checked every sensor on the truck 3 times and some of them more. The dealerships all say that they have no idea whats up and the only thing they could do is start replacing parts randomly. I really wish I could find a cure for it.