I bought this car in 2003 with 60,000km. I am now up to 280,000km and the car runs as smooth as the day I bought it. Haven't had to touch anything under the hood. Just the usual wheel bearings and tye rod replacements that you would normally have to with this kind of mileage. I have car pooled with people recently who drive imports and I just find they can't compare to the smoothness/comfort of a GM.
Comfort and reliability. Powerfull V6. Great gas mileage if you keep it under 115km/h