So we just got new work trucks last week. The cheapest of the cheap. I listen to a lot of podcast and whatnot from my phone. But these trucks came with these radios that have no cd/tape/aux. I've read the how to's for the 99-07c adding the aux and swapping out vin locked radios. Is it the same process for these trucks? Is is possible to add the aux without the xm? Guy at the dealership told me if you take the radio out it will lock up the vehicle. Never heard of this. Just really looking for the best/cheapest route for getting an aux hookup. Thanks in advance.