well, I thought the buzzing at first was in the front. but now i listened harder and its in the back. when I am driving in 4th at 45MPH is fine, but if I went into 5th at 45mph it starts to make a high buzzing sounds. gaining in pitch as my speed increases. i could be going 70MPH in 4th and no buzzing, but 70MPH in 5th makes that buzzing. whats wrong with my 5th gear?? thanks for the help Erik Geerdink 4512 EGGS D