Sending unit seal

[kingls1]

I think I found my oil leak with your help here, Is there any wey to change the sending unit seal or gasket with out removing the intake? I can't even see the farten thing!! oil on drivers side of motor from that general area and very little is leaking for now!! Thanks

[2001NBMZ28]

You sure that's what is leaking? If so you can buy a special socket and replace it - can be done but it's a pita to change without removing the intake. Probably can't buy just a seal or gasket - reach back there and make sure it's vertical and not broken. Easily broken doing an intake swap but usually break above the base and don't leak oil.

[kingls1]

You sure that's what is leaking? If so you can buy a special socket and replace it - can be done but it's a pita to change without removing the intake. Probably can't buy just a seal or gasket - reach back there and make sure it's vertical and not broken. Easily broken doing an intake swap but usually break above the base and don't leak oil.

From what I read on here if you have oil on driver side of block from top down good chance its the sending unit?

[wileyCoyote]

i think you have to remove the intake manifold to get access to it.. i had it done at the shop though, so i don't know how difficult it is to DIY. but, yes, the OPSU is a big PITA, and seems like a common leaker. i just saw a thread the other day about some folks are even going so far as to relocate the OPSU to a location that is easily accessible (probably not a bad idea).

[kingls1]

I hope to do the ls6 valley plate but not until winter unless leaking gets worse, just a few drops as of now..just looking for some info on this matter

[SteveC]

I had mine replaced @ a competant auto shop, and they had to remove the intake.

SteveC

[pajeff02]

I would take the extra time to pull the intake as it is not that difficult. Great thing about the LS engines is that there are no coolant crossovers in the intake to deal with.

[SMWS6TA]

Like Jeff said, It will only take a couple of hrs for a 1st timer. The socket cost about $10.

Doing it yourself will save you $100 in labor alone. There are some tricky things to remember while doing the install but if you read the directions and take your time you will be fine. Go through both of these threads below.

Detail Intake Removal/Installation Instructions:
http://ls1howto.com/index.php?article=5


Another thread that clears up some of the above instructions and other issues:
http://www.ls1.com/forums/showthread.php?t=145557


If you can wait, do this with similar jobs, like LS6 intake swap, LS6 VCT mod, replace your 12 yr old KS sensor and WH, but if not go right ahead.

[PFM]

All you need is the right sensor socket, a cold engine and a decent lite and you can change it out without removing the intake. Bought my socket at NAPA and it took about 15 minutes to change.

[kingls1]

Great Info, This is a great place for information for a newbe such as myself to help us learn these cars and do work for yourself. That is the main part of the car hobbie is the DIY part!!Thanks