I HAVE A RORING NOISE IN THE FRONT END OF MY 2005 CHEVY K1500 Z71 CREW CAB. IT IS ESPECIALLY NOTICEABLE AT SLOW SPEEDS. IT SOUNDS LIKE A GRINDING AS THE WHEELS ROTATE, ESPECIALLY AROUND 30-40 MPH. I'M NOT SURE IF IT'S IN THE WHEEL BEARINGS OR THE FRONT END DRIVE SHAFT AXLE JOINT. ANYONE HAVE THE SAME PROBLEM???

 

I just recently had the same problem. I could hear it more though when in a turn but only in auto 4wd or 4wd. Turned out to be the bearings in the front diff.

 

How bad was it? The roaring in 4WD. Mine does it too, but only in 4WD and no more than my last truck did (91' GMC).