I was driving the other night and all off the sudden the ABS kicked in, the ABS light was on, the parking brake light was on, the speedo quit working and the tranny was shifting extremely hard. Then everything will go off and work fine. Have talked to a couple of guys they said somethin about a speed sensor on the tranny that is linked to the ABS. Anybody got anything?

(2002 Silverado 1500HD)