I have an '87 Camaro. I'm trying to change the blinker switch in order to fix the cruise control, but I'm having a problem getting into the steering column. After I take off the steering wheel, there's a plastic piece with three notches around the outside. I bought a tool that I was told would remove this piece. It's like a gear puller with two legs that come out on either side and push in, but when I use it, it only seems to be pushing in on the plastic piece. It doesn't seem to be unlocking the plastic plate in anyway. Any tips or help on this subject would be greatly appreciated.