Lokking to buy a buick century what to look for?

It is a 1998 with 142,000 miles what should i look for and what type major problems do these cars have? thanks

the same basic stuff you look for when buying any used car.

clean title (does not say salvage, flood, etc.), recently passed emmissions inspection, engine compression/vacume check OK, look inside oil cap and see if the rocker arms are varnished or full of sludge (lack of regular oil changes), tranny fluid smells burned (lack of transmission service), does the car track well?, evidence of shoddy major collision repair (frame straightened improperly, mismatched paint, etc.)

145K miles is OK on the GM 3300 if the car has been serviced and tuned up regularily.