Ok we have a 2015 chevy express that as far as i know has the factory tow package. I put a brake controller in it a while back and it worked just fine. Now it has quit and I am looking for the fuse that controls it and am having no luck.

 

I think it's under the hood.

Look through this:
http://www.gmupfitter.com/files/medi...2015_en_US.pdf