Remove the airbag fuse before you do anything. It should be in the fuse block under the rear seat. Then there should be 4 screws or release pins on the back side of the steering wheel that need to be removed or released. The airbag should then come off. I just pulled the one on my daughters '99 SLS to replace a switch. Treat the airbag like a loaded gun and never put your head in the line of fire. Also keep in mind that when it is on a work bench in the inverted position, should it deploy (not likely but anything is possible), it will launch like a rocket.