Steering wheel vibration

I've got a 97 tahoe 4x4 that vibrates whever I brake. The vibration occurs a little at slow speeds and alot more at moderate speeds. The Vibration is noticeable to the point where the driver and passenger could feel the vibration very easily. Got 265/75/16 michelins on them if that info matters...any suggestions or ideas of what the problem might be???

Your brake rotors are warped. Time to have them turned and get new brake pads. Also if it has been awhile, go ahead and rotate and balance your wheels too.