Oil Cooler Block Off Gasket

[Plimbob]

I am diagnosing an oil leak on my 2007 5.3 (309K) and after reading some of the posts I am leaning toward the oil cooler block off, lots of oil around the filter. I am pretty sure is not the filter.

However, other than taking off the plate, is there a way to know beforehand if its the wide oval gasket or the two hole gasket?

Thanks for any feedback!

 

[OR VietVet]

I am diagnosing an oil leak on my 2007 5.3 (309K) and after reading some of the posts I am leaning toward the oil cooler block off, lots of oil around the filter. I am pretty sure is not the filter.

However, other than taking off the plate, is there a way to know beforehand if its the wide oval gasket or the two hole gasket?

Thanks for any feedback!

Do yourself a favor and get the billet plate and gasket/seal kit and be done with it. The OE plate warps and hardly ever reseals correctly.

https://www.amazon.com/ADAPTER-Cooler-Billet-Supply-551608/dp/B00LV4IJSY/ref=sr_1_4?crid=SDTZVDRKZQZ6&keywords=gm+oil+block+off+plate&qid=1668353663&sprefix=gm+oil+blockoff+plate%2Caps%2C155&sr=8-4

 

[gooffeyguy]

I am diagnosing an oil leak on my 2007 5.3 (309K) and after reading some of the posts I am leaning toward the oil cooler block off, lots of oil around the filter. I am pretty sure is not the filter.

However, other than taking off the plate, is there a way to know beforehand if its the wide oval gasket or the two hole gasket?

Thanks for any feedback!

The 2 hole type of gasket is used if you have the 2 lines coming out and going to an oil cooler.

If you have no cooler then it's the oval gasket.

 

[OR VietVet]

The 2 hole type of gasket is used if you have the 2 lines coming out and going to an oil cooler.

If you have no cooler then it's the oval gasket.

Yea, in the one I referenced, it shows a round o-ring but you just shove that o-ring in to the oval shaped slot on the back and tighten down and good to go. The billet plate does not warp.

 

[Plimbob]

Thanks Guys - much appreciated!

 

[Plimbob]

One question, do you need to drain the oil out of the pan or can you just drop the filter and let it drain out?

 

[Fless]

You can change the blockoff without removing the filter or anything else. The oil level isn't that high, or at least shouldn't be!

 

[gooffeyguy]

No need to drain the pan. You will get the usual amount of oil that comes out from above the filter when changing the filter.

 

[gooffeyguy]

BTW, is this vehicle 2wd or 4wd?

If 4wd you will probably have to remove the front driveshaft U joint straps to be able to drom the shaft down a bit out of the way so you can get your hands up there.

If 2wd nevermind the above info, lol

 

[Plimbob]

Hey Tom, sorry for not specifying the drive train, it's 4WD. Thanks for the heads up on dropping the front shaft.

Tim

 

[Fless]

Here are a few pics of my '04 4x4 with the front propshaft out of the way (I changed my when I did an oil change, so the filter was off). Thread link goes directly to the post with the pics.

What did you do to your NBS GMT800 Tahoe/Yukon Today?

I'd really rather find some cloth seats to be honest I'm sure you could find a decent set locally for a good price. I prefer cloth myself.

www.tahoeyukonforum.com

 

[Plimbob]

Fless, I looked through the pixs, thanks for posting the link. A quick question, I noticed you were concerned with a leak. Did if ever leak?

Thanks,
Tim

 

[gooffeyguy]

Here are a few pics of my '04 4x4 with the front propshaft out of the way (I changed my when I did an oil change, so the filter was off). Thread link goes directly to the post with the pics.

What did you do to your NBS GMT800 Tahoe/Yukon Today?

I'd really rather find some cloth seats to be honest I'm sure you could find a decent set locally for a good price. I prefer cloth myself.

www.tahoeyukonforum.com

What sensor is that right above the block off plate?

 

[Fless]

What sensor is that right above the block off plate?

I have no idea. I just don't want it to leak anything....

Anybody know?

EDIT: looks like it's the engine block heater (110v) @gooffeyguy I had to go look.