My abs light came on about 2 weeks ago out of no where. I recently changed my rear brake pads about a month ago and my front pads about 4 month ago. The brakes pedal also vibrate a little bit when coming to a stop. This only happens on a couple of stops after i start up the truck. The brakes also stick a least once after starting up the truck and driving it. Would could be the probable causes of this issue?