Oil leak at cooler

[Porno Joe]

Put about 800 miles on the truck yesterday. Slide under it today and see some oil at the bottom corner of my bell housing.

It appears to be coming out of the oil cooler. Can see the oil on the rear corner of it.

Any special tricks to pulling the oil cooler and replacing all the gaskets/o rings?

Looks pretty straight forward but want to check first. Leaving on vacation in two weeks so want it fixed before then, but don't want to dive into anything crazy.

 

[malibu795]

It's time consuming on a 4x4.. If I did it again I'd drop the front diff and safe time from fighting sockets and the cooler itself up around the diff
Lift definitely helps

 

[Porno Joe]

Welp slid under it and looked again. Might not be my cooler. Might be my lower valve cover.

I might pull the wheel liner tomorrow see if I can get lucky if I just snug all the bolts without pulling it