Clunk Noise

I hear a clunking noise when I let go off my brakes when I come to a stop. I also feel the truck nudge at the same time. The feeling is like someone is tapping my bumper. I noticed it feels like, when you put a car into reverse, that little nudge while it goes into gear. I get that when I let go of my brakes. It only happens when I come to a stop, when I let go of my brake pedal I get my problem. I don't know if it's a brake problem, transmission, or drive line problem. I just changed my transmission fluid not to long ago, about 3 months. I got the filter from the dealer, and I used b&m trans fluid.... Puzzled.... Thanks....

$400.00 will fix it, I had the same problem, last month I took it in and they let me know that this is common. the slip yoke has been upgraded due to this. My trucks had to be replaced if your lucky mabey just regreased.