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What is your question?
Hi There, My pickup(4x4)whines once I get over 30 miles per hour. Makes the same sound as if I had mud tires on it. I checked out the driveshaft bearing, appears to be fine.

1 Reply
You could have a wheel bearing failure; you could also have a rear differential noise...due to wear. It will take a technician first hand contact to determine what area is making noise, and then pin point the source.