Sunfire GT '99 Lock Question

When I unlock my door from the outside it opens my door only, when I use the lock switch on the inside of the door (either sides) it will lock/unlock both sides. Is it possible to get the same effect if I use my key on the outside to unlock both doors at the same time?

I doubt it... I don't think there's a switch in the key cylinder for that, so you're probably SOL unless you can get a replacement cylnider from the dealership with that feature.