I changed the motor.
I replaced the factory brakes with Euro Sport package, and did other tuning modes to it.
I replaced a ball joint on the left side.
A small car; not as bad as the others have said, but this is a cult car in Europe and other places in the world. Don't blame the car; blame the manufacturer, Pontiac, for screwing up the design with their cheap manufacturing practices.
Opel's Kadett is still loved and driven, and so is England's Astra IV; if Pontiac had done what the Europeans did (by giving it the 1.8L and 2.0L engines that Daewoo intended for the car) it would have done a lot better over here.
My car is almost 20 years old and has no rust on it, but I don't have the money to get it properly painted. It is number 8 of all Pontiac LeMans one car domain from 1987 to 1993. The 1.6L (50hp) lacked power, but the 2.0L (95hp) did too. The Euro models went from 60hp 1.4L to 129hp 2.0L 8v GSE motor, and the 2.0L 16v in the GSI has 150hp.
Yeah, the Daewoo Lemans would sure have done a lot better with the engine intended for it, proof of that statement is how successful Daewoo was with the Lanos in the US, which had the engine that Daewoo intended for it, lasting just barely over three years from 1999-2002.
The only fault Pontiac bears here is putting the LeMans name on that Korean built piece of crap.