That sounds like the switch needs to be pulled off of the tranny and readjusted. Turn the switch where the linkage goes through all of the way to the right or left and watch the positioning on the cluster and then reinstall it. If the switch was pulled off with it in the "N" position it can cause this problem. The switch needs to be in P and the linkage needs to be all of the way in Park. I had this same problem on another swap I did.