Rear Brakes / Calipers

You need to bleed the brakes there is air in the system. Do this, fill the brake fluid reservoir then loosen the right rear bleeder screw wait until you get a really rapid drip or stream then tighten the bleeder and do the same for the left side keep watch on the reservoir it will go down fast. Sometimes it's necessary to jack the front of the car up to get the fluid to run, your vehicle is very dangerous right now and you should park it until it's fixed.

Thanks so much!