Have a question about remote entry as well, but figured I wouldn't bother making a seperate post. I bought an '02 Alero in september, which came with no key fobs so I didn't inquire about remote entry.
However, whenever I hit the power locks to lock the car, it dings at me then I have to press the button again to lock the doors. I noticed on another GM car I test drove, it did this, and when I walked away with the fob it would lock itself if I only hit the button once.
So, do GM cars that can/do use this RE system ding at you like this? Or is this a surefire way to find out you have Remote Entry?