Sometimes when I come to a stop I feel a small jerk , and sometimes I dont, but when I take my foot off the brake I feel that small jerk again , could this be the tranny or brakes????? :shakehead

Does it feel like someone nudged you from behind, like a light thump from the rear?
If so, see this thread:
http://www.automotiveforums.com/vbulletin/showthread.php?t=695250