Wheel Bolts problems of the 1999 GMC Sierra

Nut that holds wheel and bearing onto axle became loose, resulting in loss of bearing and wheel almost fell off.

Lugs: bolts: nuts that hold the hubs on the crome wheels are too short, and cannot be tightened. The problem was reported to the dealership. The nuts have been tightened several times which does not if not solve this problem. Checked every other day the hub would just fall off.