I have a friend at work with a 2003 Lightning. He has taken it into the shop three or four times because he says it is pulling to the right really hard. He is used to a vehicle pulling a little because of alignment or the bank of the roads here in Arizona but both dealerships he took it to can't find anything and they have even changed the tires twice. Do any of you know what may be causing the truck to do this. Any help will be really appreciated.