How do I change the oil pressure sensor in my 2011 GMC Yukon

How do I change the oil pressure sensor in my 2011 GMC Yukon What is the easiest way to change the oil pressure sensor in a GMC 2011 Yukon I can't afford to pay 400 dollars to have a 30 part put in and I'm pretty good with tool I just don't know how to do this or where it is