I need some help. My neighbor bought my 90 CTD a couple years back. Says its the best truck he's ever had. Yesterday it started squeeking. I listened to it, its comeing from the drivers side,down in beside the block. When the RPMs go up so does the squeek. I couldnt figure it out so i told him id post it here to see if any of you have ever run across this before. Im trying to get him to be a member of the TDR. Hope we can figure this out. His truck is a 1990 ,4x4, 5speed,168k,no mods. Thank you all for any help. Edgeman