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2001 gmc jimmy 4wd wheel hum

I have a 01 gmc jimmy 4wd, at 35 + mph and above when I start to turn to the right there is a hum that occurs and continues until the turn is completed, this does not occur when turning left at the same speed. The hum also occurs when I am driving through a softly rolling road when my car comes off the roll to the bottome of the dip. Any ideas?

It sounds like a right front outer wheel bearing. Easy to replace. Good luck.