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

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Just Fishing

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I got barbaric with mine. I first stood it up in a tray to bleed out like a hog for a few weeks while I worked elsewhere on the engine. Then, I sprayed the inside (in each port and through TB) with foaming engine degreaser and rinsed that with the high pressure nozzle on the garden hose. Repeated until the foamy water washed out white. Then, I sprayed brake cleaner everywhere inside it, shook it around from all angles to stir it, and repeated until the liquid running out was clear. Soaked it one last time with the brake cleaner and blew it dry with the compressor. Inside was sanitary. If I remember, I'll check the manifold for oil when I do my oil change in 1,000 miles. That may be a few months, though.


I wanted to do the degreaser and hose, but it's 19 degrees outside.
And silly me forgot to use compressed air on the garden hose when I cleaned the second head.
My hose is more of a weapon at this point. :ehcapt:

so i ran with what i had.

I did seriously think about bringing the intake inside and clean it in the tub... only for a moment though. :gr_grin:

I did at least store the intake in a garbage bag and tied off due to the fuel fumes.
So i had a ton of oil left behind.
I wish i turned it on it's side... but oh well. :cool:
 

Just Fishing

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So am I right in saying the second row won’t fold flat like the nbs did?

"Folds flat" as in to the floor?
I Wish!

My S10 blazer did that, loved it.

Just fold the 2nd row all the way forward and it gives you sorta what your looking for...
sorta. :jester:
 

08z71bgm

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"Folds flat" as in to the floor?
I Wish!

My S10 blazer did that, loved it.

Just fold the 2nd row all the way forward and it gives you sorta what your looking for...
sorta. :jester:
Sorta. Lmao. Not even close. So to get the same idea I need to have a platform in the third row so everything lines up on top of the seats when the back is down.


What a brilliant design to a shit show.
 
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Sorta. Lmao. Not even close. So to get the same idea I need to have a platform in the third row so everything lines up on top of the seats when the back is down.


What a brilliant design to a shit show.
If the 3rd row seatbacks are folded down, they will be the same level as the 2nd row ones

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08z71bgm

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If the 3rd row seatbacks are folded down, they will be the same level as the 2nd row ones

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Yes but you lose that storage space for useless seats where no one ever sits. A platform would be a better use of the space.
 
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Different strokes for different folks. My 3rd row gets used sometimes by either my daughter or my dog. I just keep them in there, never really had to remove them. They'd have to be stored in the garage somewhere then. Having the LWB gives a lot more room for stuff behind the 3rd row without having to flip them forward or remove them.:cool:
 

wjburken

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Different strokes for different folks. My 3rd row gets used sometimes by either my daughter or my dog. I just keep them in there, never really had to remove them. They'd have to be stored in the garage somewhere then. Having the LWB gives a lot more room for stuff behind the 3rd row without having to flip them forward or remove them.:cool:
Same here. With 4 kids, 3rd row gets used all the time. Only time I’ve taken them out were to do some deep cleaning. Of course I also have a truck so it gets most if the heavy hauling assignments.
 

Just Fishing

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got it mostly together now.
Did some cranking with the plugs out to verify oil pressure on the gauge, got about 40psi cranking.

Cleaned up the plugs, wires, verified resistance on the wires since i had to really pull on #8 to get it out... :rolleyes:
replaced fresh when i bought the hoe, otherwise i would have gone with all new.

Removing the wires i learned i needed more dielectric grease next time around, so i got everything real good... lol
Fresh copper anti-seize on the plugs etc. :cool:

Double checked the oil level, then fired her up with out the accessory belt or antifreeze for a minute.
Runs great! so far... ;)

Oil pressure is fantastic.
I forget what it was at, but I'm happy. :favorites37:
 

Just Fishing

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Replaced the shifter linkage bushing on the suburban. I caught it rolling down the the street on the security camera. Thankfully our street is flat enough where it only rolled 10 feet before it stopped. Crisis averted.

When was a kid we were playing basketball and a neighbors truck popped out of park and nearly killed us.
Landed on top of a car right next to us.
Very Loud.

I never trust park.
Always use the parking brake!
 

George B

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And I was able to setup my catch can the other day.
Had planned to get pictures, but the baffles were pretty tight. :D

Might still pull it apart once more before the final install.

However, i used a stainless scrub thingy on the bottom, baffle above that.
Then while cutting out the baffles in the sheet aluminum, i noticed my scissors were nearly cutting perfect little windmill blades.
SO i made a center baffle as a little propeller. :D
Idea is that the air will spin when getting sucked up to the top.
And most likely it's just going to be a center baffle that flows very well... :)
Then another baffle above that.

then built a little stand off in the middle and riveted the assembly together.
I thought about another baffle at the top, but lazy me just cut one of the scrubs in half and stuffed it in there. :cool:

Installed a tube all the way to the bottom, nice tight fitting in the baffles, should force it to the other side etc. :D

It should work fine i believe. :boti:
Which one do you have and do you have any pics?
 

Just Fishing

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Which one do you have and do you have any pics?

This one: https://www.amazon.com/gp/product/B019OKU1QO/

I bought this one for my Vette a few years ago, it was cheaper iirc...
Went with it since it fit the clamp here: https://www.amazon.com/Moroso-63401-Universal-Mounting-Bracket/dp/B000CON1ZU/

Design changed slightly, the clamp still fits but i needed to really tighten it down.
Nice because you can open the top.
However, this is a new design apparently.
So the top has a gasket, the bottom has a nice O-Ring.
Improved a bit.

Easy to do what you want inside. :cool:

ETA: i would not recommend it.
Weird threads, but it will work fine for me.
 

iamdub

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Looked at it and now I'm suspicious that it's starting to lift itself again. It did this back when I was lowering it over a year ago. It just seemed to be getting taller and taller the longer I worked on it. That wheel gap is looking bigger than ever. It's not the wheel and tire combo- I compared them to the 22s when I was switching them out. They're right at 1/8" shorter OD. It needs to come down 1/2", maybe 3/4".


IMG_4436.JPG
 

Rocket Man

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Looked at it and now I'm suspicious that it's starting to lift itself again. It did this back when I was lowering it over a year ago. It just seemed to be getting taller and taller the longer I worked on it. That wheel gap is looking bigger than ever. It's not the wheel and tire combo- I compared them to the 22s when I was switching them out. They're right at 1/8" shorter OD. It needs to come down 1/2", maybe 3/4".


View attachment 266606
Yeah it looks terrible......:rolleyes:
 

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