It's kind of a mixed bag for me. First of all, one grandfather died before I was born, so I only had to deal with the deaths of three grandparents. It hit me very hard when the first of my grandmothers passed away. I just didn't know how to deal with the fact that she wasn't there anymore.
Several years later, my other grandfather died. Call me cold-hearted if you want, but I didn't really feel much at all. I was a pallbearer at the funeral. It was cold and snowy, and that was about it.
My other grandmother died not too long after that, and while I felt a little more than when my grandfather died, I got over it pretty quickly.