BRAKE ISSUES - WHAT IS WRONG?

First of all, when you change brakes you do them in pairs. If you replace brake pads, you do both sides., If you replace rotors, you do both. Is your abs light on all the time? Have you checked the calipers and hoses? The caliper could be locking up, the brake hoses could be collapsing internally. Hope that helps.

I bought the car used in October, since then, had to change the brakes twice and were changed at the same time, however I had to change the driver side a third time. I have not checked the calipers or hoses so I will see about that today if the rain holds up. Thanks a bunch!

You might either check or have it checked your brake pedal switch cause I have noticed since I had mine replaced on my 2006 Trailblazer, that my brakes even seem to work better I know have better pedal and don't feel spongy... I hope this helps your problems too......

Here's a video of a typical system. As you can see, there are many things that can be malfunctioning. You may have a bad wheel sensor or a bad valve solenoid. It's a tough call. https://www.youtube.com/watch?v=rfzuW8wFpgI But like Stanford said, check all the basic parts first. You may have rusted slides or a piston may not be retracting after brakes are applied.

I'm agreeing with what others have posted. Accelerated pad wear which you most certainly have is very likely caused by bad calipers. I can't think of anything else that would cause that. Calipers are inexpensive and are a sensible replacement on an older car anyway. I've had similar brake failure issues at very low speed like you have. Check wheel bearings and possibly even axle shafts. Tolerances for the ABS system are very small. Bad bearings seem to throw things out of spec just enough send confusing messages to the computer and make the brakes operate a bit erratically. Both times when I replaced bearings and axles the problem went away.

It was the master cylinder - it went out....