Many of you on here state that you do not let the dealer touch your trucks unless they absolutely have to or there is a recall issue. I was going to take my truck to a " Rear Differential Diesel Specialist" to have them fix my little noise that the dealer is shrugging off as " Normal". The Gentleman said that he would be happy to do the work, but feared that if he touched it, the dealership could completely void my warranty. I really don't want this to happen as I paid for the extended warranty as well. Does this mean all of you just give up your factory warranty when you take delivery of a new vehicle??