Ok, I have to add another .02 cents here....they can only void a certain part of warranty or refuse a job under warranty if they can absolutely prove with a shadow of doubt that the lift caused a failure. By putting on a lift you are not altering your powertrain, your steering, your electronics, your body work, exhaust, etc.....you are altering your suspension system....the only thing they can ding you on is your suspension system. Contact DC (Daimler Chysler Corp.) not a dealership, and speak to their warranty office....thats what I did and they told me the exact same thing. I asked all the questions I could about other parts of the vehicle and thats what they said.
A dealership will give you hassles over "voiding warranty" because they are in the business of making money and selling product. When they do a warranty job they are not getting paid to do a diagnostic, and they are not getting an hourly labor rate, so in the end they are losing money to do a warranty job. Be sure if you speak to a dealership and they tell you "You can't do that without voiding" quote the Magnuson-Moss Act (do some research on it first) and that will help you out. It basically outlines the American Law about vehicle warranties and is in place to help people like us.
Remember, your powertrain covers ALOT of items...most of which don't even connect to the suspension...that is a MAJOR part of your warranty...to be blunt, your dealership is full of s**t.
At any rate if you buy an aftermarket new product they usually come with thier own guarantee or warranty....so where you lose you gain...don't let the dealers tell you what you can and can't do. They are not interested in your vehicle, they are interested in your money. Best of luck
