A cloudy area to be sure. Did you get this in writing, was it so stated on the service order? Were I you and any issues ever came up involving the front end while your truck is still under warranty I would be certain to return to this dealer in hopes they honor their word. Another dealer could vary well look at your lifted truck and deny any warranty claims related to the front end contending the lift itself or any single part used in the lift caused the issue. Now here's the kicker ..... if a dealer denied a warranty claim you can contest it. You can contest it directly to Nissan. Chances are they're going to back the dealer. You then have the option of lawyering up and going to court. Under the Magnuson-Moss Warranty Act it is up to the OE to prove, you don't have to prove it didn't they have to prove it did, the modification caused the issue at hand. So, you fork over $5K up front to get a lawyer to take the OE to court and wait a year or maybe 2 or 3 for a court date and then they show up with 4 lawyers and 6 engineering experts, all on the OE payroll, and show your modified/lifted truck is out of spec and thus this is the direct cause of the issue at hand. End result ...... you're out $5K plus you had to pay $$$ to remedy whatever the issue was with your truck's front end.
Harley-Davidson has or at least a somewhat similar or a variant to this warranty philosophy. If you the motorcycle owner installed any modification/part other than an H-D branded part - warranty voided. The branded part and unbranded parts might be exactly alike, exactly the same, from the very same vendor, that mattered not. Any add-ons had be branded H-D. And the kicker to that one as I understood it was some accessories, as determined by H_D, had to actually be installed by an H-D dealer or you voided your warranty.
