YES , Yes you can, it is not hard at all. I will post a email address for a company that has the complete kit for the install that includes the harness, the clockspring, the controlls and the new bottom plastic for the steering wheel.
I did it to mine and I have a 98, I wanted to update the look of my interior so I went to a late model steering wheel, but if you have a earlier Blazer you will have to get a newer steering wheel , and a new air bag. They are all over Ebay.
If you want to see what it looks like installed , try (Blazer SS pic's) ,And click on the link that Cailen provided. The pic's are kind of old , but you will get the idea.
http://photobucket.com/albums/c391/Blazer111/
I am not at home , but as soon as I get there I will post the address.