We have a 2001 Impala LS with the 3.8 V6. It's a great engine. Very peppy for the hills in Tennessee we drive on. The sound system is very high quality other than a speaker rattle in the front passenger door. The only downfall to this car is the turn signals. They only work when they want to and the dealership is no help. They want to charge upwards of $500 to fix something that should be recalled by GM since I know of at least 10 other Impala and Monte Carlo owners with the same problem.The radio also goes out when you turn on the rear defroster. But other than that we've had no problems with our Green Ghost. It's the only high quality vehicle GM has left.
The handling is totally awsome. Eats up curvy roads for breakfast. Seats are comfortable and the gas mileage is outstanding for a car of its size.
Fix the electrical system. The blinkers and hazard lights are a nightmare when the they don't work in interstate traffic. I've gotten 3 tickets for failure to signal.