Front Suspension Hub problems of the 2002 Saturn VUE

I have a 2002 Saturn Vue awd. At a little over 100,000 miles, noise started from the front drive train. The noise was like constant howl. The noise would start at about 30 mph and increase at higher speeds. It took a long time to notice that the noise would disappear when taking a freeway ramp to the left. The noise slowly grew louder until at 136,000 miles the noise had become very loud. After some internet searching, the noise was believed to be the front wheel bearing. Normally, front wheel drive wheel bearings last longer so it was hard to believe it had gone out. There was no noticeable play in the bearing either on or off the vehicle. Replacing the bearings eliminated the noise. I have the full set of Saturn shop manuals and the diagnostics did not indicate that the bearings needed replacement. At least on internet posting said after taking apart an old bearing that Saturn had eliminated a bearing race. If this is true, it probably saved a few cents for Saturn but cost me hundreds. After removal, the left front wheel bearing had noticeable noise just turning it by hand. The right bearing was in better condition but still produced noise on the vehicle. The rear wheel bearings will probably need replacement also, since now it appears that noise is coming from the right rear.