2014 2500HD GM part discontinued, need help

My parking brake module isn't working on my 2500HD. I use this truck for towing trailers and unloading/loading boats. It also has a 116 gallon fuel tank in the back bed so it's a little unnerving just throwing it in park on the ramp with such heavy loads pulling on it. The Original part number is 22800498. Can anyone here help me locate one or what some third party part would work?