Where is the leak? Oil Pressure Sending Unit Replacement

[#1taho]

couple more pics. Valve cover bolts seemed plenty tight. it sure looks like they are dry to me (everywhere i can see). the only wet thing on top i see is actually around the filler neck, it looks like its not really in there very well haha.

here's some pics, as good as i could take, the valve covers look nice and dry? btw, anyone else have problems uploading pics from phone? i always have to resize them down on my computer now since the site changed.

View attachment 56942

View attachment 56943

View attachment 56944

View attachment 56946

View attachment 56947

I have a motor out on the stand, i see your complaint on the back of my motor, I think it's could be the cam sensor right next to the oil pressure sensor. I have the same oil leak i am trying to fix before it goes in.
I think it will be very hard to see in the truck but try to have a very good look with a mirror, maybe that could be your problem. yes I have to resize the pictures also. i will try to get a pic of the back of my motor to show you.

 

[#1taho]

Right beside the oil pressure sensor is another sensor. My guess is it's the cam sensor. My is wet like you two. The oil thing I can think of is its the sensor on the right. I hope this helps you guys. I will be taking it off later to see if there is an o-ring.

 

[treehan77]

Thanks pics of it when you get to it please

 

[#1taho]

Thanks pics of it when you get to it please

I did post them. Did you get them ?

 

[treehan77]

I did post them. Did you get them ?

Meant the O ring of sensor when you took it out

 

[#1taho]

Meant the O ring of sensor when you took it out

Ok. No problem. Late this afternoon

 

[#1taho]

Ok. I had a few mins so here it is. It is a cam sensor but the oil seal is at the bottom. Not very smart of gm. On the top no gasket or o-ring. This seems to be my problem.

 

[#1taho]

I can get more pics for you if you like

 

[treehan77]

I can get more pics for you if you like

Cool thanks. Looks like that's something I can take off without removing the intake or something huh?

 

[#1taho]

it will be tight but it should be doable. 10 mm is the size of the bolt for the sensor,to turn the sensor a few times and get a small pick to lift it out. shouldn't be too hard , move your oil pressure sensor to have that extra room. let me know how you make out.