Brand new vehicle. First trip in car leaking coolant around engine head bolt holes. Was over a 1,000 miles from home and discovered leak purely by accident. At first thought the car was leaking oil so took the car to a GMC dealer to have the car checked out. Once the car was inspected the mechanic informed me there was a leakage around the engine head bolt holes and it had already leaked out alot of coolant, but not enough to overheat the engine. I cannot believe that GM would put out a product with such shoddy quality control. The head is of poor quaility material allowing the fluid to leak around the threads on the head bolts. The head was replaced under warranty. Now I have no faith in the vehicle whatsoever, just when and where the left side might have the same issue the same issue. I feel like I have a 40,000 dollar boat anchor. 2800 miles and already had the engine apart, GM builds a sh*tty product