My son has a '97 Tacoma with 107k miles on it. He is experiencing a noise (squeal) at low speeds and a bit of a vibration that increases with speed. The noise and vibration are speed related, not RPM. What are the symptoms of a failing U joint and the bearing that supports the split drive shaft? Could either of these be the problem? TIA ~~~~~~~~~~~~ Jim Artherholt snipped-for-privacy@comcast.net