I was driving my truck yesterday when all of a sudden i lost the little light on the gear selector. Pulled over and shut the truck off. Started it up and the ABS and brake light came on as well as a SERVICE BRAKE SYSTEM message on the DIC. Started driving and only had 3rd gear. Speedo did not work either and there was still no light on the gear selector. I am thinking NSBU switch for the gear selector issue but what about the ABS and brake light? Could the two problems be related or am i just having bad luck? The CEL is not on so not sure what to do. Any thoughts or ideas on my problem?