How do you check to see if smart trac is working on a 2000 olds bravada?

To check if the Smart Trac system is working on a 2000 Olds Bravada, start by ensuring the vehicle is in a safe, open area. Turn the ignition on without starting the engine, and observe the dashboard for the Smart Trac indicator light; it should illuminate briefly and then turn off. If the light stays on or flashes while driving, it may indicate a problem with the system. Additionally, you can engage the four-wheel drive and listen for any unusual sounds, as proper engagement is a good sign that the system is functioning correctly.