I had this same thing happen a few days ago. Couldn't get out of park, brake lights not working. I read up on it and along with this thread and the picture, I was able to change it myself. Got the part from the Chevy dealership for $11 and after about 10 mins (I have carpal tunnel), I got it switched out.
I took it by the dealer first and they wanted $90 just to look at it! I'm glad I looked it up after that. I saved myself $79!
Thank you for this thread!
