02 silveado oil sending unit???
 

im working on my 02 silverado 5.3 tryin to chase down this oil leak that started about 2 weeks ago... the truck has about 147K on it... i thought it was the valve cover leaking took it off and seems to not be the culprit of the leak... got back under the truck looks to be coming from he top part of the engine above the trans... my oil preassure gauge has been moving around lately... where exactly is the unit at... i have not put my hand back there yet as i want to research it a bit before i go fishing back there... if anyone has any ideas please let me know, thanks!

found it...

the sending unit is behind the intake. the leak could possibly be coming from the vally pan. i had the same problem with mine.