I'm hoping that someone has run into this issue and knows how to solve the problem.....

I have a 2013 GMC 2500HD Duramax pickup. The spare tire is mounted under the bed and to lower and raise it you stick a shaft in through a hole in the bumper and spin it up and down. On my truck the mechanism for raising and lowering is frozen from corrosion and wont turn. Problem is that it is up above the spare and I can't get to it.

Does anyone know of a slick way to get this thing unstuck?

Thanks for any thoughts!

Bill