Originally Posted by zabeard
when you let off the gas or right when you touch the brakes?
It can happen any time during deceleration or braking when the torque across the slip yoke spline is reduced enough to let it slide. With new grease, it is more slippery than with old grease and it may not bump at all.
On the Rangers I have driven, the slip yoke bump is much more noticeable on initial acceleration that it is when slowing.