Have a 2007 yukon denali 6.2 liter. Have an oil leak that isn't the rear main seal. Trying to figure out where it could be coming from. Oil drips off of the oil filter but the filter is tight. 2 pictures kind of show you where it's wet on drivers side. Thanks
Oil leak. Not rear main
- Thread starter bangon
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Classic leak spot is that little block-off plate with a bulge in it just above the oil filter. The cover warps over time and the thing starts to leak. Putting on a new seal won't stop the leak. Buy a new billet cover with an integrated o-ring, and you'll be good to go. Careful with the torque spec there also. They're small bolts threaded into aluminum. I *think* the spec is 106 INCH pounds.
Update: I have found TWO torque specs for those bolts - both from GM on different vehicles with LS V8s. One lists it as 80 inch pounds and the other lists it as 106. Having personally stripped one of those bolts out, followed by the joy of installing a helicoil in the hole with zero room to work, I would err on the lesser side and stop at 80 inch pounds. And, I suspect ICT includes an additional torque spec for their screws with the kit.
Edit: Link to the correct one without the oil pressure gauge port: https://www.summitracing.com/parts/...SKtCLceXS3OtJTnVp-ys8r4vlihtImEBoCLCcQAvD_BwE
Update: I have found TWO torque specs for those bolts - both from GM on different vehicles with LS V8s. One lists it as 80 inch pounds and the other lists it as 106. Having personally stripped one of those bolts out, followed by the joy of installing a helicoil in the hole with zero room to work, I would err on the lesser side and stop at 80 inch pounds. And, I suspect ICT includes an additional torque spec for their screws with the kit.
Edit: Link to the correct one without the oil pressure gauge port: https://www.summitracing.com/parts/...SKtCLceXS3OtJTnVp-ys8r4vlihtImEBoCLCcQAvD_BwE
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does that one come with a plug for the sensor hole? I almost got that on cause I like anything ict I've used. but couldn't tell and it is probably the odd metric sensor size?
I went with a different one, china one which prefer not to do.
I went with a different one, china one which prefer not to do.
It's a blockoff plate and has no hole for any kind of sensor.
I stand corrected. It would need a plug. There are others online that don't have that tap.
donjetman
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you can get it on amazon for $13
Coolman1987us
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You still have the link to the one with the hole? I want to add another pressure gauge.
Yup. I left the first link as it was to the one with the hole on Amazon.
Coolman1987us
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The Amazon link in the same post? It brings up the ict one with no hole.
this one in his post has a M16 hole in the top.. scroll the Pic to the left.
the one at the summit link without it doesn't seem to be listed on Amazon right now and not when I looked. gotta go some place else or ict directly. but I wanted it the next day, so I got a no name one from Amazon. it's a pretty basic part so can't say it didn't seal even thou I still have a leak that's probably oil pan on mine but I'd trust the ict brand more.
the one at the summit link without it doesn't seem to be listed on Amazon right now and not when I looked. gotta go some place else or ict directly. but I wanted it the next day, so I got a no name one from Amazon. it's a pretty basic part so can't say it didn't seal even thou I still have a leak that's probably oil pan on mine but I'd trust the ict brand more.
How are you so certain that it is not the rear main seal? There is also a rear cover gasket that leaks, and it is just as hard to get to as the rear main. When I replaced mine, there was no way I could verify the rear main for certain. In fact, the rear cover gasket was leaking more than the rear main.
I would replace all the easy gaskets/seals such as the blockoff plate, oil pressure sensor, oil pan, etc. They're cheap and easy to do. Also, at that age, if they're not leaking yet, they probably will soon anyway. If it still leaks after doing those, then there's only one more thing to do.
If there’s no evidence of a leak *inside* the bell housing, we can generally rule out a rear main seal leak on these engines.
Dustin Jackson
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That thing above the oil filter is sopping wet, that's the oil cooler block off plate like others have said. I would suggest looking and making sure that isn't the cause of the leak.
Also.. what in the world is this thing? Are my eyes deceiving me or is this a sponge that someone put in place to hide oil from dripping on the driveway?
Also.. what in the world is this thing? Are my eyes deceiving me or is this a sponge that someone put in place to hide oil from dripping on the driveway?
I could not see any evidence of my leak inside the bell housing. This is because it drained down the back of the engine. See post 112 here:
Rear Main Oil Seal
I could beat ya to the start, but I do work slowly so you may finish before me!
www.tahoeyukonforum.com
I'm not saying that yours is a rear main leak, but don't discount it either. Again, I would recommend doing the cheaper and easier stuff first.
swathdiver
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Double gaskets?
I think it's just baked on oil residue. If you look at my images of the oil filter (conveniently from that post #112) you will see the same casting, but cleaner.
I did that once...... what a freakin mess, at least it all came out in the driveway (instantly) as I was backing out to take it around the block
that was a learning lesson, particularly becuase I was broke as a hell and could barely afford the oil I had just put in it.
That made it a habit to always double check.....
Been there myself.
My time was I was supposed to be helping my wife with something in the house with the kids and I told her "oh, let me change the oil in your Yukon quick - it shouldn't take very long". Mind you this was about 8:00 in the evening. She is standing out in the driveway watching/supervising/fuming and I get in the vehicle and start it up to get the oil moving and I see the pressure gauge rise and then instantly drop and my wife is screaming that there is oil all over the driveway.
Sure enough, the old gasket had stuck to the pan and I didn't notice since I was in a hurry and didn't check. An hour later after having to drive 30 minutes to the closest open autozone to get oil and oil dry, I was done.
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