This has been the worse vehicle I have ever had. At 101,000 miles the motor threw a rod. At the same time the Catalytic converters went bad and the transmission went out. Replaced it all but the new motor keeps throwing oil and the cats keep going out. We have now replaced the new motor 3 times and the cats the same amount and this third motor and cat is going bad too and we have only driven it for 2400 miles. The ac unit went out and we replaced the compressor, hoses and some other part, put Freon in it 3 times and it is still bad. Throws hot air every time we come to a stop. Was told there is two units on this thing but am also being told there is not. Owe too much on it right now to trade it in and of course GM wont do anything since it is past the warranty. Frustrated and will NEVER buy anothe Buick or GM vehicle again. I tell everyone I know not to get a vehicle like this. GM new of these defects and as long as no one asked questions they said nothing but have a problem and they say nope can't help. Past the warranty.