I am lost! I don't have gear indicator lights N,D,1. I have a 97 c3500 crew cab, 6.5L, AT. I have replaced the safety neutral switch on the tranny, the pigtails, sent the cluster to ISS to have it checked...came back fine. Everything works. Checked for continuity on the wires from the switch on the tranny, all good. Where do I go from here?