I don't recall exactly if 2000MY turned VCS off when going into 4-Lo. On my '05, it's only when I turn on the CDL. I believe that at least the 99MY trucks turned it off in 4-Lo.
It is possible the light is burned out, but probably unlikely as it's probably never really even turned on. In my truck, I never saw a CDL or VCS light when locking the CDL in 4-Lo until I high centered once. After a minute or two of trying to get free, my lights started working. They're pretty reliable now but every now and then I'll have an instance where I can hear the relay engaging behind the glove box but the lights won't come on the dash. Usually backing up or rolling forward a few feet will trigger them.
Good point. I don't believe that ran through our heads at the time.
