Brake repair, the basics
A grinding or growling noise means your brake pads are completely worn away. Don't waste time getting your car to a certified brake repair technician, as each of these instances warrants brake repair. This is one job that can't be left to amateurs; there's too much at stake. After having brake repair work done on your car, you may still hear your brakes squeal when stopping. This usually means that the technician didn't take the brake repair process all the way to the end, and you would be wise to return your car to the shop.