97 S10 Blazer ABS light

I'm new to this forum and have a question. I have a 97 S10 Blazer and my ABS light is on. What can I do to diagnose what's causing it? Everything seems to work fine. Thanks

When the ABS light is illuminated, the ABS system is inoperative. It must be diagnosed with an ABS capable scan tool.

When the ABS light is illuminated, the ABS system is inoperative. It must be diagnosed with an ABS capable scan tool. I guess Auto Zone don't carry those:disappoin

Nope! ABS capable scan tools are not cheap, well into the hundreds of dollars. Either buy one or pay someone to check it out for you. Without a doubt it's cheaper to pay someone to check it out.