First post, bought the truck 2 mo ago and today is 3rd trip to dealer to fix the incessant cricket chirping coming out of the rear leaf springs. First they said it was def injector (nope), then they tried the tsb for the isolators in the spring pack (nope). Took a test drive today after telling them it's coming from the rear leaf drop brackets, confirmed it with my own set of chassis ears from Amazon. Test drive with the tech, he could finally hear it. Smack the rear springs and it buzzes/chirps a ton. Now? Oh you have this little ding in the bumper so we think it's that. We want to send it to the body shop. I'm about to buy the spring packs myself and just do it.