2006 Impala LS hissing noise coming from the vehicle

“I have a 2006 Impala LS. Yesterday I noticed a slight hissing noise coming from the vehicle. It’s like some metals grinding each other with rhythm and the problem is only obvious at the between 20-35 mph. I guess it is from the rear wheel on the driver’s side. I cannot hear it if I close the window or drive at speed higher than 40. What could it be and how can I pinpoint the problem?”

Pull off the rear wheels and check to see if anything is rubbing, you’ll see rub marks in the area that’s hitting stuff. Also check the rear brakes to make sure the pads aren’t just worn down to the metal. Most noises in the back will leave telltale rub marks, so look closely when you pull off the wheels, inside the rims and where the tires may be rubbing against body work.