Replaced caliper twice,not releasing brake,abs light on ,brakes grab as I drive
That’s a problem, take it to a mechanic that can read ABS error codes.
May be a separate problem. The brake hose to that corner may have failed internally and is acting like a check valve. Replace it and see if it goes away. If it does replace ALL of the rubber lines as this WILL happen again. GM made crappy brake hoses.