I am taking my truck in to be looked at tomorrow. The backlighting behind the trip computer flickers, so I want it checked out while still under warranty. That computer is a $1000 part. I had my ICELink installed several months back, and they will surely see that when they are taking apart the dash. Will they refuse to work on it because I modified the radio? Does it make any difference that I had it installed "professionally" as opposed to me doing it myself?