Yep, those have a special bleed procedure to follow to remove all the air from the system. If you have a Tech II, Modis, etc scanner, you can go in and follow the instructions under the ABS module section.
Now if you don't have access to those tools and don't want to pay someone who does, next best thing is to slam on the brakes on a gravel road. It will cycle the ABS pump. Then bleed the brakes again. You may have to do this a few times to remove all the air.