Shes been in the shop almost 30 consecutive days, and all for an airbox replacement due to finding alot of oil under my car. The dealer still cant tell me when theyll receive the part, and chevrolet customer service kept me on hold over 30 min to which i gave up and hung up the phone. What do you guys think is the best way to handle this? I know due to california law i can return the car without questions once she passes the 30 day mark, but then i lose out on an amazing car. anyone have any tips?