2008 Denali XL 6.2L Low Oil Pressure - Fixed

[PG01]

Thanks for this thread.
Really sounds like what my 2013 Tahoe needs.
Except my Tahoe has a 5.3 engine , I guess the fix is about the same?

Yes and no.....5.3 does have same issue but there are variables and to absolutely say thats your problem isn’t 100% correct so before tearing your lower half apart.... You gauge can be off, sender bad, screen behind sender can be clogged. Some other things to ask.....Whats your oil pressure currently? At cold start idle and running down the road? What oil you running? Filter? How long are your oci’s?

 

[PG01]

@Baddawg start here

https://www.tahoeyukonforum.com/thr...ronicles-of-low-oil-pressure-by-07burb.62826/


https://www.tahoeyukonforum.com/threads/is-this-oil-pressure-normal.110105/

 

[Baddawg]

@Baddawg start here

https://www.tahoeyukonforum.com/thr...ronicles-of-low-oil-pressure-by-07burb.62826/


https://www.tahoeyukonforum.com/threads/is-this-oil-pressure-normal.110105/

Thanks, Pete.
My issue looks like the original post here, not quite as bad, my warm oil pressure at idle stays above 20#.
I hadn't heard about the pressure sensor and screen issue and I will look into that.
I like the add two quarts and see what happens to the oil pressure to test for pick up O ring.

 

[kbuskill]

Thanks, Pete.
My issue looks like the original post here, not quite as bad, my warm oil pressure at idle stays above 20#.
I hadn't heard about the pressure sensor and screen issue and I will look into that.
I like the add two quarts and see what happens to the oil pressure to test for pick up O ring.

That's a pretty good test... just don't drive it like that. The crankshaft will whip the oil into a frothy mess and you will be pumping oil and air.

Oil is a good lubricant, air.... not so much.

 

[Baddawg]

That's a pretty good test... just don't drive it like that. The crankshaft will whip the oil into a frothy mess and you will be pumping oil and air.

Oil is a good lubricant, air.... not so much.

Right, run it at idle, OK.
Maybe move it around some at low speed, low RPM, low load , sorta OK, not to bad .
Take it out on the hiway and drop the hammer, pretty bad idea.

 

[mikeyss]

Good write up on the repair. One thing I found when replacing oil pan gasket is you do not have to totally remove the front diff. If you remove the lower shock bolt that is under the axle shaft, then the diff bolts, it allows the axle shafts to drop down further thus allowing the diff to drop a few inches lower.

 

[mikeyss]

This is a example of what I mean. See how the lower shock bolt is in the way if there was a axle shaft above it?

 

[General Stalin]

Awesome write up. Very likely this is my issue as well as my oil pressure in my denali is looking identical to yours in the first pics (below 20# at warm idle, a little above 40# at cold idle).

I have replaced my oil pan gasket before as I was leaking oil out of the factory gasket, wish I had replaced this too while I already had it off...

From my experience you do not need to remove the differential to get the pan out, like mykeyss said. You can just unbolt it and let it drop down a few inches and the pan can slid in and out fine. That's what I did. Saves you a lot of time and effort for sure.

 

[CobraKing]

Thanks for this thread.
Really sounds like what my 2013 Tahoe needs.
Except my Tahoe has a 5.3 engine , I guess the fix is about the same?

Same fix with the 5.3 - I did it on my '14 PPV with that motor. Truck's RWD so it went a lot quicker due to not having a front differential.

 

[Ponchonutty]

What’s this part do and where does it install?

Did you install that deflector too?View attachment 217945
https://www.amazon.com/General-Moto...XW7JJF4VAGZ&psc=1&refRID=M2CW0KYYFXW7JJF4VAGZ