2005 Chevrolet Uplander LT Fwd 4dr Minivan (3.5L 6cyl 4A)
This is the third GM van I have owned. We have had numerous problems with the power doors failing - either not opening at all, or not staying closed and requiring a manual close. The brakes wear out very frequently, and the front end will not stay in alignment. It has now developed serious electrical problems - short circuits are blowing fuses, and the power door motor wants to stay on continuously. Luckily our lease is up, we are returning the vehicle and will not buy another GM car.
I have completely soured on the car, so I have no favorite features. It does have a lot of cargo space however.
GM needs to design better cars - or get out of the business.