Kim Parent from Drivers Side answers questions received about the diagnosis of sounds your car may make. 1. Squealing sound-Typically means brake pads need to be replaced. 2. Mechanical sound with steering wheel looseness-Probably means you have loose joints in the front of your car. Kim advises that this is a safety issue. 3. Mechanical knocking sound without steering wheel looseness-If you hear this sound when you're making turns this could mean you have a CV Joint that's worn out. Kim recommends that for any of these sounds, especially the mechanical sound with steering wheel looseness, that you take the vehicle to a mechanic ASAP as these are issues that could potentially be very dangerous.