When I approach a stop sign or stop light, and I hit just a slightest bump in the road, I feel a vibration like I'm going over rumble strips that continues for just a split second when I'm fully stopped. And there's times when I accelerate and I use little acceleration that the truck begins to vibrate in the same manner until I accelerate with little bit more pressure. Not sure if it's a transmission issue, or if there's bushings underneath the cab, carrier bearing.