well heres a quick update on mine. the service manger said he feels like he has done everything in power to fix it with no avail. the dealership it self won't just buy it back, I'd have to start the process with gm for that. Instead the dealership is going to find me a used low mile infiniti qx56/qx80 and I'll pay the difference they will then just unwind the tahoe purchase part of my deal. told them to do that so I don't have to fight gm and wait even longer to get a different vehicle. good thing is i'm still in my loaner vehicle and plan on keeping it until they find me a infiniti