96 Silverado oil filter housing question

have a 96 chevy truck Silverado with a 350. It has an oil cooler. I have a leak somewhere and was going to replace the seal in the oil
filter housing. I have never taken one apart and my Hayes manual does not have a description of it. It looks like two bolts undo it. Do I have to remove the oil cooler lines also. What is in there once you get it off? Is this a hard repair?
I appreciate any help!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.