just an update on this seems to be rare occurrence.I pulled the vss sensor and tested it with a meter.Spun the gear and got good voltage.Also checked continuity and passed also.cleaned it up and reinstalled it.plugged in my reader
and cleared the faults.Took it for a spin and had no problems till I went to work the next day where it started to buck for several seconds than go away on it's own and would not return till the next day.I never got the check light and never lost my speedo or any other gauges.I went to a u-pull-it auto junkyard in hopes to find a truck close to mine with no luck.I figured since this problem
is so rare I could take a chance with a used one from a junkyard and get away with it.
My next step it to check the ecm connections and wiring from the sensor to
the speed cluster.I have some info. on what terminals to check if anyone ever needs them.I will update this post once I find the culprit.