I've had the tahoe for about 3 years and for a while now have been hearing what I would call a squeking/clunking noise when going over bumps or railroad tracks. It does make a little cluncking noise when taking off after you were braking hard, you only hear it as soon as you hit the gas. (as the rear of the car settles back down). Any takers on this one? Everything looks and appears to be in good shape with the rear supsension.