Purchased a 2007 Yukon XL, now to make it reliable!

[jdwood1111]

Amazon.com

You can get these in different sizes and head angles. There are other designs. I have several because I do not want to fight with vice grips, channel locks and needle nose pliers.

That’s exactly what my neighbor had but like 40 years older lol. They were probably a size or two too small but they got me to get the job done!

 

[OR VietVet]

That’s exactly what my neighbor had but like 40 years older lol. They were probably a size or two too small but they got me to get the job done!

They work great because they lock when the spring clamp is opened. The slotted round tips pivot too.

 

[YukonGold12]

Hey all! Got some more work done today. This time I did:

- Topped off transmission fluid
- Replaced engine oil and filter
- Added Fumoto valve
- Added Rislone

Updates were added to the spreadsheet.


Once everything was done. I was warming the engine so I could get another level check on the oil. It was good, but I noticed this..squeaking noise coming from the passenger side. I have never heard something like this before and it seemed to go away once the engine was warm. Was this just the exhaust manifold warming up or something? Really strange.

Noise at about the 10 second mark

 

[OR VietVet]

Hey all! Got some more work done today. This time I did:

- Topped off transmission fluid
- Replaced engine oil and filter
- Added Fumoto valve
- Added Rislone

Updates were added to the spreadsheet.


Once everything was done. I was warming the engine so I could get another level check on the oil. It was good, but I noticed this..squeaking noise coming from the passenger side. I have never heard something like this before and it seemed to go away once the engine was warm. Was this just the exhaust manifold warming up or something? Really strange.

Noise at about the 10 second mark

Could be but I did not hear anything at the 10 second mark that I did not hear at the 30 second mark. I would bet you cannot hear anything at all from inside cab.

 

[YukonGold12]

Could be but I did not hear anything at the 10 second mark that I did not hear at the 30 second mark. I would bet you cannot hear anything at all from inside cab.

I’ll attempt to get a better video next time I hear it.

 

[YukonGold12]

WELL, I think I know where it’s leaking oil hahah.

 

[OR VietVet]

View attachment 435542

WELL, I think I know where it’s leaking oil hahah.

Don't assume. Where do you think that oil COULD be coming from?

 

[Doubeleive]

Hey all! Got some more work done today. This time I did:

- Topped off transmission fluid
- Replaced engine oil and filter
- Added Fumoto valve
- Added Rislone

Updates were added to the spreadsheet.


Once everything was done. I was warming the engine so I could get another level check on the oil. It was good, but I noticed this..squeaking noise coming from the passenger side. I have never heard something like this before and it seemed to go away once the engine was warm. Was this just the exhaust manifold warming up or something? Really strange.

Noise at about the 10 second mark

I also do not hear anything at the 10sec mark but it does sounds like you have a exhaust leak, possibly down at the y pipe somewhere. maybe it's just the video
this is compared to what mne sounds like

 

[j91z28d1]

Don't assume. Where do you think that oil COULD be coming from?

I was about to say the same thing. what's there like 6 places it can leak and show up right there?

the oil filter, the pan gasket right above it is where 60psi oil goes in and out of the filter(where I think mine is from) . the oil cooler/block off above it. the bar bell in the back of the block. the corner of the oil pan, factory had to use RTV on the corners and found some kinda rtv that isn't oil resistant long term, the rear main but less likely and the housing the rear main goes into, more likely.


oh and the oil pressure sensor can be working just fine electrically but leak oil put of the middle of it and run down to the point.


can you hear the annoyances in my post about mine leaking in the same spot haha

 

[YukonGold12]

Don't assume. Where do you think that oil COULD be coming from?

You are correct! It looks like it’s coming from the oil cooler block off. I’m going to replace the gasket and go from there.

 

[OR VietVet]

You are correct! It looks like it’s coming from the oil cooler block off. I’m going to replace the gasket and go from there.

IMO, I would not reuse the plate because it is likely warped and will leak again. Buy a Billet plate and a new o-ring seal and call it good. Clean the old oil off the whole area and then keep an eye on it for future leaks.

 

[YukonGold12]

I also do not hear anything at the 10sec mark but it does sounds like you have a exhaust leak, possibly down at the y pipe somewhere. maybe it's just the video
this is compared to what mne sounds like

Yours sounds great!!

 

[YukonGold12]

Changed the block off gasket. Drove 180 miles. No more leaks from that section anymore. Now some oil accumulating at the base of the pan and at the top around those bolts. Going to need to track those down, there isn’t oil under the car anymore after it sits for some time. Which seems to be resolved from that gasket replacement.

It looks like there is something accumulating around the diff. I had cleaned that area last night when I changed the oil.

 

[YukonGold12]

Worked on the truck again today.
- Changed spark plugs and spark plug wires
- MAF sensor cleaned
- Air filter replaced

That #8 plug was kind of a pain, but I decided early on I was going to attack it from the wheel well, removing the liner and everything made that easy.

Old plugs were toast. I've attached some pictures of the plugs and I scoped the cylinders for y'alls enjoyment.

The engine seems to be idling much better, although still some work to be done.

 

[YukonGold12]

The rest of the cylinders.

 

[YukonGold12]

Spark plugs 1,3,5,7

 

[YukonGold12]

Spark plugs 2,4,6,8

 

[OR VietVet]

1, 7 and 4 look to have some deposits and likely oil burn on them. Needs a set of plugs, at least.

 

[donjetman]

x2 what OR VietVet said

and make certain it has the update driverside valve cover GM# 12570427 to minimize oil consumption thru its built in PVC system.
Original top (poor design) and updated bottom.

 

[donjetman]

And check the GM service bulletin out:
https://f01.justanswer.com/ebrock63...il+Consumption,+MIL+ON,+Engine+Runs+Rough.pdf