I have a 2005 Chevy Cavalier and have been realizing that the ride has been getting noisier, but when I make a left hand turn ( or even turn the wheel 5 degrees or so to the left) it is much quieter. It sounds like a low vibrating sound and seems to shake the whole front end of my chassis. I can feel feel the vibration through the gas pedal, and it continues even when in nuetral or without the gas depressed. It is worse between 40-65 mph. Does anyone have an idea as to what this is? Loose parts, misalignment, motor mounts, bad belts? And what it might cost to have this fixed?