[Gjguitarmn]

At speeds over 50 mph, a loud rumbling noise and vibration occurs in the front end when the brakes are applied. Not hard braking...any kind of braking. I can't find anything on it. Dealer checked brakes (but didn't road test it) and said brakes are ok. My brother has owned GMC products his whole life and never heard anything like it. Ideas?

 

[DPK]

Could be bearings

 

[Gjguitarmn]

Thanks. Didn't think of that. Having a mechanic check it tomorrow.