2004 Chevy Astro ABS system malfunctioning

Well this is my 2nd Chevy Astro. I really do love this van but am extremely dissappointed with the shoddy parts. Let me just give you some of my astro history. I totalled my last Astro in Jan of '08 because of snowy road conditions. The van was an AWD and just spun around in the middle of the road as I was driving along. It had the wiper issues, mirror issues, all of which had been recalled and the dealership said that they had been taken care of but didn't work.
Then there was the ABS system that started to malfunction. It was slow at first at the end of road where there may have been gravel. Then it slowly progressed until I hit someone in a parking lot when trying to park and my brakes went.
Now fast forward to my newer 2004 Astro. The brake pedal makes this squeaky sound when I press it down. Occassionally it appears that my highbeam light come on in my dashboard after having applied the brakes. My ABS light has come on twice now and they are starting to act like the other van's. We took out the sensor all together in the old van and that disabled my ABS I really don't want to do that this time. I don't want to spend $500/wheel to fix sensors or bearings that couldn't be fixed the last time.
What do you suggest?