Weird humming noise and vibration coming from brake pedal, even in park
My 2004 Z71 Avalanche is making a weird humming noise that's been getting progressively louder. I feel a lot of vibration in the brake and gas while in park, and the sound revs with the engine. When I'm in park and press the brake it gets louder and the brake pad starts vibrating. Not sure what to do being I'm on vacation, about 200 miles away from home. Never had a problem before and always kept my truck tuned up and in good condition. Any thoughts?