Hi, Can anyone tell me if a sticky brake caliper can cause a low reverberating howl from the rear of a 2002 2500 4WD Siverado just after stopping,releasing the brakes and then pulling forward or backwards. It does not seem to appear at higher speeds. I have also noticed it on uneven situations like pulling into an inclined driveway that puts the frame into a twisting situation. Applying the brakes seems to eliminate the low howl. Any ideas would be helpful.