Rear brakes make a sound when braking and when you push on the gas to go forward

Hello, without knowing the physical condition of the brake system at all four wheels, and in addition understanding the quality of the components being used, it's impossible to know what the noise could be caused from and why there could be a pull of any kind. A physical inspection by a tech near you is needed; they can give the best advise after visualizing the system. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops