2003 Pontiac Aztek review from North America

We just purchased a 2003 Aztek used after having our 1998 Pontiac transport Montana van blow a head gasket and then we were told the whole engine needed to be replaced. We went with a newer Pontiac because we ran our van pretty hard. We took it cross country twice then the air conditioner compressor went out at 60,000. We chose not to spend the money and get it fixed. The water pump went out at 90,000 then at 102,000 the whole engine. It started with coolant leaks then a blown head gasket, then a valve in the oil pump was stuck and built up oil pressure and blew the gaskets, and the engine. Our Aztek, we have had for 3 weeks and had to bought it used. It is leaking coolant in the intake manifold and because it is a used car I believe the car lot is not fixing the problem. I have a 3,000 mile warranty on it, but I am going to purchase a much higher one so I will be covered. I thought our transport was just a fluke then I discovered this website. I am very angry with GM and believe they need to make this right!