I have an 05 gmc dually 4wd, I just replaced the carrier bearing and a u joint on the rear shaft, now once or twice a day, when I come to a light to moderate stop, I'll hear a slight kind of a grinding rubbing noise, and I can't tell if its the brakes or something else. The brakes and rotors are less than a year old. Any ideas? And it only about twice a day and that's it.