[wilkerson3]

Our '99 Suburban has a brake noise that isn't really a grinding nor a squeaking, but more of an auditory/resonating sound - like a vibrating noise. The noise is coming from the front brakes. The noise can usually be recreated when brakes are applied and we are braking at a decline (front end taking most of the weight of the vehicle). It seams to be only the last few feet of a complete stop. The noise doesn't happen on every stop. If the noise occurs upon stopping and we push the accelerator no noise will be heard when accelerating. If the noise occurs upon stopping and we idle from the stopped position there will be a pulsating noise/vibration for maybe 5 or 6 revoluions. No vibration or steering wheel wobble like a warped rotor.

During the hot summer the noise only occurred on the first and sometimes second braking after it had been sitting over night. Then never again. As the weather gets cooler and more humidity in the air the problem is now more persistent and could occur anytime throughout the day. This morning I heard another Chevy Truck - maybe a '96 Silverado brake and the same noise occurred with his truck. Thought maybe this might be a common problem with these years of trucks.

Brake pads were replaced in Spring (noise happened in cooler weather with brand new pads) and pads are still good (on front and back). Greased calipers when replaced pads. Rear drums were just inspected - still have plenty of pad and also had a ton of rust dust. Blew out dust. 80% of pads were shiny from contact and 20% still rough.

Questions - could a cheaper rotor have been installed and be the problem - replace the rotors? Front brakes taking on too much work and rear brakes not helping - replace the drums?

Obviously looking for cheaper solution. Brakes stop vehicle just fine. The noise is really, really loud sometimes and quite embarrassing - so would rather get rid of it.

Thanks