HT,
Not sure if this matters or not, but the other day I had noticed my wipers were on.
I noticed that even though there werent moving, I could hear the motor buzzing at the times when the timer would allow them to move.
I was sitting in a parking lot and I hear buzz.......... buzz........... buzz...........
Then I realize it was the wipers and turn it off and the buzz disappeared.
Was this similar to the situation of the truck that came in?
Just seems that the motor is still good (since it is still buzzing) but that the gear or track that causes them to move is off. Maybe I am wrong.... and so i ask you