Hi there. I have a 2006 GP GXP that is having some possible engine or computer issues and really need to know if anyone has found a place in the Atlanta metro area that seems to know about these cars and what the hell they are doing with them. I am getting tired of placed having no idea about my cars issues. I am thinking of trying another GM dealership just to see if I get lucky and they happen to have someone there who gives a crap.