The oil cooler line on this vehicle is faulty- they Crimp that crimps the hose to the metal parts breaks off. This is common in this vehicle (after it happened to me, I started to read on this and thousands of customers have had this issue). My oil exited my vehicle and upon replacing the part on my own (after towing, parts and labor cost), the engine would not crank. Come to find out that the engine seized up (locked). GMC/CHEVROLET is not taking any responsibility for this. There is a customer satisfaction program for this as it is a known issue as stated, specially in the colder parts but apparently my VIN did not get affected by this. This needs to be looked at as it very costly for a customer.