Maybe whole center triangle piece might come off, don't know. Are there any screws behind the wheel?
I found that the triangle piece is just a snap fit, the steering wheel is attached by 6 screws, no puller needed.
I'm embarrassed that I asked how to, when it was that simple.
Hopefully this will help out someone else
Clever Screen Name-damn your interior is almost exact as mine except my steering wheel is the wood/leather one, I contacted Cobalt for a replacement, they responded saying that wheel is no longer available and the cost would be over a grand if it was, I have a quote to repair mine, 450.00, may just shop for aftermarket
Thanks for everyone's input