Bountyhunter, have you tried reading the codes to see if there is a code set for the ABS? On your car i think you can pull codes with a paper clip. Sorry i don't have my chevy shop manuals anymore so i don't have the information sitting in the garage anymore, don't know of any web sites right off hand. But that is where i would start.
And you are right ABS can be a pain, i wish it came with an off switch because there are times i want the dirt to push up in front of the tires.