Pontiac Problems? Ask a Mechanic for Answers ASAP
Unfortunately, the 3.4L engine that is offered in the 2003 Aztek was notoriously known for having head gasket problems. Usually with failure right around the 150k mile marker. So if this vehicle has 150k on it, I would recommend that a cooling system pressure check be done prior to purchase to ensure the head gaskets are not leaking. The head gasket is a major job and can be very costly. More of these vehicles had the problem than did not. I would be very cautious of this purchase.