Mrs C

I have a 2002 Chevy Suburban 2500 with HD armor package -8.1 with Allison Tran. Noise in the front left wheel made me get the hub replaced. Worked well til I crossed a mountain towing my 40 foot camper. Overheated my brakes and later that day the noise started again. Its a metal rattling-type noise that is quiet at low speeds but increases with 12-15 MPH and up. Looked under truck - saw nothing broken or dragging. Am currently 300 mi away from home. Would appreciate info from past issues.