Thats when I mean, If you used it for the first time or you pulled it harder then normal or the fact that the car is brand new.....The Brakes or the cable might get stuck, just enough for the rear brakes to rub creating a squealing or sqreaching sound. This is normally the case for an older car that has never had the hand brake used and is then used for the first time but I've seen it happen with new cars too