What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[89Suburban]

Went in for an oil change. Just got phucked.

 

[Just Fishing]

Went in for an oil change. Just got phucked.

View attachment 343810View attachment 343811

Helicoil time!

 

[Just Fishing]

I’ve been gone a while trying to wrap things up with a house I just recently closed on. Now I finally have some time to get back to working on the Denali.
Read end is done (Diff Cover, sway bar links, bushing, brackets, bolts, track bar) - photos to follow.
Trans Pan, trans flush, filter, transfer case. Between the broken dipstick tube introducing dirt/debris and the previous owner never changing the fluid, I’m worried how long my transmission is going to last.


Question for those Tech2 owners. Can you use the SD flash card on any device and make it a “Tech2” or is there something specific that’s needed which the Tech2 (or look-alike) “body/computer” has? The reason I’m asking is because I have an Autel that has been a great unit for working on all kinds of vehicles, and am wondering if I can use it loaded with the latest Tech2 flash card.

Basic computer stuff here.
Lots of details why, but that autel would need some sort of emulator in order for that to even have a chance of working.

 

[08z71bgm]

Whaaa. I never thought of doing that. I thought they had to be up high and before the cat. Obviously I've never looked into this much

The difference before and after car is negligible so it doesn’t matter

 

[RooTBeeRthe1st]

Went in for an oil change. Just got phucked.

View attachment 343810View attachment 343811

*Edit* nevermind, just saw the threads

Mine looks like that every oil change in the last 45,000mi.

I'm still collecting parts for a "rebuild" dod delete.

 

[pwtr02ss]

The difference before and after car is negligible so it doesn’t matter

Learned something. Thank you for that

 

[pwtr02ss]

*Edit* nevermind, just saw the threads

Mine looks like that every oil change in the last 45,000mi.

I'm still collecting parts for a "rebuild" dod delete.

My Yukon looks like that every oil change since new. Has 37k miles now. Typical wear I suppose

 

[89Suburban]

*Edit* nevermind, just saw the threads

Mine looks like that every oil change in the last 45,000mi.

I'm still collecting parts for a "rebuild" dod delete.

Looks to me like the threads were already stripped and somebody helicoiled it and that failed as well. Need to figure out a fix that doesn’t involve pulling the pan or replacing it.

 

[Just Fishing]

Where i left off last night!

I really wanted to get the oil system primed before i attached any accessory belts.
Got nearly 40psi cranking w/o plugs.
I think the 6.2 starter cranks a little slower than the 5.3 started did...


Next get the rest installed, front axle bolted in all the way, wheels on.
then i get to see if i can pull the hoe out of the garage a bit, kuz i get to remove that 87 octane fuel from the tank!

 

[Just Fishing]

The difference before and after car is negligible so it doesn’t matter

No kidding?
I understood it would fk with your output.
I figured it would show lean or some nonsense.

it would be much easier if i could install downstream more.

otherwise, things...
but we don't talk about fight club.

 

[Just Fishing]

Looks to me like the threads were already stripped and somebody helicoiled it and that failed as well. Need to figure out a fix that doesn’t involve pulling the pan or replacing it.

I would have expected it to pull the helicoil out in one piece, but yeah it does look like that to me too...
next size up if true...
not good.

 

[gooffeyguy]

The difference before and after car is negligible so it doesn’t matter

Yup. Most dynos use one that sits in the tailpipe.

When I first got an Innovate portable wideband system 15 or so years ago it had a tailpipe clamp for it to sit in the tailpipe while you drove the vehicle to get test readings

 

[08z71bgm]

No kidding?
I understood it would fk with your output.
I figured it would show lean or some nonsense.

it would be much easier if i could install downstream more.

otherwise, things...
but we don't talk about fight club.

No man. It’s like a .02 difference in lambda. That’s why it’s negligible.

 

[Just Fishing]

No man. It’s like a .02 difference in lambda. That’s why it’s negligible.

 

[Just Fishing]

Is it getting hot in here or is it just me?

 

[Sparksalot]

First time out with the hood Louvers on thecopcar. It’s definitely at operating temp after driving an hour. I stopped for a bite for both dog and me. AC running because it’s humid out. I’m watching incoming air temp. It is above the ambient temp on the dash sensor. I hopped out and held my hand over the hood to gauge that, then over the louvers. Heat was boiling out. In other words it’s working for what I wanted.

 

[Just Fishing]

Anyone know where the fuel pump relay and or fuse is?
Under the hood i see a spot where it says it should be, but i don't see a fuse in the location nor the little square relay or breaker looking thing...

 

[gooffeyguy]

Rotated the tires.

While I had it all up on jackstands I looked more in depth for the oil leak. I'm 90% sure it's coming from the oil cooler line block on the side of the pan.

Now debating if I should just replace the gasket or replace the entire line set. They're like $95. Mine has some black residue gunk up where they transition from hard to rubber near the power steering reservoir. Not sure it they're seeping or it's from something else.

Also, whichever one I do, can I just unbolt the front driveshaft U-joints and let it hang to get room to get to that oil cooler line block?

 

[Tonyrodz]

Looks to me like the threads were already stripped and somebody helicoiled it and that failed as well. Need to figure out a fix that doesn’t involve pulling the pan or replacing it.

This is why I got rid if my 1st work van. I should've made the moron garage fix it on their dime, but I was pretty much done with that van because of the rust it had.

 

[wsteele]

Anyone know where the fuel pump relay and or fuse is?
Under the hood i see a spot where it says it should be, but i don't see a fuse in the location nor the little square relay or breaker looking thing...

Don't think you have either. I think that is taken care of with your FPCM.