a srange howling and clicking noise is coming from under my truck while driving on 1996 Chevrolet S10

there is a loud howling and clicking noise coming from under my truck while driving

by in Clearlake, CA on June 27, 2013
2 answers
ANSWER by on June 28, 2013
4x4, manual or auto. trans.?? While you are at it, Blazer or pickup and if pickup truck what engine?
ANSWER by on June 28, 2013
agree need more info