I posted a thread earlier today about my new leaf spring TSB from the dealership making a squeeking/grinding noise. I finally got off my lazy ass and crawled underneath my truck to investigate. What I found was a dealer installed "Phuck Up". They installed the top bolt wrong on the passenger side. See photo. I sprayed WD-40 on it so it wouldn't squeek anymore for now but they will have to remove the entire leaf spring set to fix this. What idiots! The TSB was performed a couple months ago, still cold out, windows up, radio on, I never heard the squeeling tell I was riding with the windows down and the radio off at low speeds. The bolt is rubbing against the spring shackle housing. When you get the TSB complete, make sure they have the top bolt nuts toward the outside of the spring pack. Leave me some rep for this one, I need it. Going to the dealership tomorrow to show them their quality work and to raise hell.