Does the sound happen at the exact same time the light comes on?
Can you pinpoint where the sound is coming from?
Things to try:
Clean the wheel speed sensors
Check and clean all sensor electrical connections
Check and clean wiring going to master cylinder.
Top up brake fluid.
If nothing helps you may need a reflash or a control module, as there is an old TSB (98-15-19?)out for this, according to the link.
Check out this info as well:
http://www.cartrackers.com/Forums/li...star/1966.html