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

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Just Fishing

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Hoe is back together, minus the wire retainer on the top of the manifold and the engine cover.

New Found i had an ac delco belt and ac belt, interesting...
Falling apart when i was cleaning/degreasing.
What would be the chance that it's original? :jester:

Guessing it was replaced by the dealer a while back, probably one of the times it was traded in...

Anyways, took the PN from both and ordered via Amazon.
Original put back on for now.

I swear engineers must take bets on who can route the belt to be the hardest to guess, or the most ridiculous.
I finally gave in and reviewed the service manual.
Also wondering why no sticker showing the routing.
:rolleyes:

Tensioner pully was also sloppy, so i ordered a new AC delco tensioner.

Any clues on a PN for the idler?


Also put in fresh dex mixed with distilled water, bought two gallons and mixed up 4 gallons.
Using it all i'm at the "full cold" and i have yet to start the engine with it... *sigh*
:nolol:
 
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Hoe is back together, minus the wire retainer on the top of the manifold and the engine cover.

New Found i had an ac delco belt and ac belt, interesting...
Falling apart when i was cleaning/degreasing.
What would be the chance that it's original? :jester:

Guessing it was replaced by the dealer a while back, probably one of the times it was traded in...

Anyways, took the PN from both and ordered via Amazon.
Original put back on for now.

I swear engineers must take bets on who can route the belt to be the hardest to guess, or the most ridiculous.
I finally gave in and reviewed the service manual.
Also wondering why no sticker showing the routing.
:rolleyes:

Tensioner pully was also sloppy, so i ordered a new AC delco tensioner.

Any clues on a PN for the idler?


Also put in fresh dex mixed with distilled water, bought two gallons and mixed up 4 gallons.
Using it all i'm at the "full cold" and i have yet to start the engine with it... *sigh*
:nolol:
As long as the pulleys turn in the correct direction and the belt fits tight, it doesn't matter how it's routed...lol.

I have small white arrows painted on all the pulleys on my mustang so I know when I put the belt on everythings turning the right way. It doesn't have some of the stock accessories, plus has some additional ones like a vacuum pump and supercharger. There is a couple ways the belt can be routed, but each takes a slightly different length belt. They'll all work in a pinch, but one way the tensioner is just about bottomed out with one belt, but use the other belt and it's in the middle of it's range, or use the different routing and the first belt works fine....lol

Sent from my SM-G930V using Tapatalk
 

cfmistry

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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

:confused: Looks perfect to me. Is that a 3/4” drop?

Instead of measuring fender height I measure running board height. I think it’s less arbitrary since it’s not an arch.
 

alpha_omega

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Hoe is back together, minus the wire retainer on the top of the manifold and the engine cover.

New Found i had an ac delco belt and ac belt, interesting...
Falling apart when i was cleaning/degreasing.
What would be the chance that it's original? :jester:

Guessing it was replaced by the dealer a while back, probably one of the times it was traded in...

Anyways, took the PN from both and ordered via Amazon.
Original put back on for now.

I swear engineers must take bets on who can route the belt to be the hardest to guess, or the most ridiculous.
I finally gave in and reviewed the service manual.
Also wondering why no sticker showing the routing.
:rolleyes:

Tensioner pully was also sloppy, so i ordered a new AC delco tensioner.

Any clues on a PN for the idler?


Also put in fresh dex mixed with distilled water, bought two gallons and mixed up 4 gallons.
Using it all i'm at the "full cold" and i have yet to start the engine with it... *sigh*
:nolol:

P/N for the idler pulley: 12669569

i recently replaced mine along with a “few” other parts.
 

alpha_omega

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As long as the pulleys turn in the correct direction and the belt fits tight, it doesn't matter how it's routed...lol.

I have small white arrows painted on all the pulleys on my mustang so I know when I put the belt on everythings turning the right way. It doesn't have some of the stock accessories, plus has some additional ones like a vacuum pump and supercharger. There is a couple ways the belt can be routed, but each takes a slightly different length belt. They'll all work in a pinch, but one way the tensioner is just about bottomed out with one belt, but use the other belt and it's in the middle of it's range, or use the different routing and the first belt works fine....lol

Sent from my SM-G930V using Tapatalk
The problem I’ve seen with the Yuks/Hoes is that guys will either install an alternator that is too big or too small or they will do the same with the harmonic balancer/crank dampener. I’ve even seen them do both and then wonder why the belt has slop in it or is so tight they end up warping the tensioner spring.
 

alpha_omega

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looks easy enough I think this seal has little plastic clips, mine has not arrived yet but I was looking thru the 11,000+ pages of the service manual and saw it, lol
View attachment 266642
Which manual are you using?

Does that mention anything about using weatherstripping “adhesive”? 3M makes some pretty awesome stuff that at first glance might make you wonder why you wasted the money, but once you get the hang of it the stuff is magical. Works similar to the old gasket maker, but is a little more forgiving and cleanup is easier.
 

iamdub

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Aka, GM lean!

Is there gas in the tank?

Lol


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But that's backwards from the GM lean! The driver side should be lower. Besides, I adjusted for that when I lowered it. After driving, both sides vary from being level to within 1/8" at most. Has about half a tank. I'll have to measure it to get some actual numbers. I swear it's losing its drop.
 

iamdub

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:confused: Looks perfect to me. Is that a 3/4” drop?

Instead of measuring fender height I measure running board height. I think it’s less arbitrary since it’s not an arch.

Thank you.

3.5/4.5

Front was supposed to be 4" with the spindles and struts, but each yielded 1.75". The rear is Jeep TJ coils and were just an experiment, but stayed cuz I like them.
 

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