What does a bad wheel bearing sound like on a GMC Sierra?
The most common symptoms of a bad wheel bearing in GMC Sierra 1500 are grinding or humming noise, knocking or clunking noise when cornering, shaking steering wheel, body vibration, uneven or abnormal tire wear, play in wheel, and vehicle pulls to one side when driving in a straight line. via
How do you check a bearing?
In the case of small non-separable ball bearings, hold the bearing horizontally in one hand, and then rotate the outer ring to confirm that it turns smoothly. Separable bearings such as tapered roller bearings may be checked by individually examining their rolling elements and the outer ring raceway. via
How do you change a wheel bearing on a 2013 GMC Sierra? (video)