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

[PG01]

mine wasn't working no matter what you did, the tech2 would always show "fuel economy mode" even if the voltage was under 12v and I had everything on.
I can only assume it was bad batteries, works fine now with new batteries and the grounds both connected to each other.

Yes I remember, glad you worked it out doubie

plus I forgot about the wipers on for more than 3 secs does it too

 

[iamdub]

Wired up the cutout and played with it. Details, pics and vids in my build thread soon...

 

[Sam Harris]

Wired up the cutout and played with it. Details, pics and vids in my build thread soon...

“Soon”..? Tease.

 

[Just Fishing]

Completed the work on my tahoe
I'm exhausted.

new O-ring installed
New pan gasket
oil pressure bypass in the pan has been replaced, and a deflector added.
Added an oil pickup tube support (I didn't cheap out, but probably should have).
New front axle mounts installed while i was in there.

I pulled the crank plate thingy, took a flash light to look at the cam bearings.
I didn't go crazy detailed with it, but everything looked great.

And i changed the oil pressure sender, and the screen under it.
The screen looked surprisingly good.
I was expecting crud in there...

Fresh fill of oil... ran the engine.
Not much change.


Oil pressure seems a bit more steady, but the gauge still flutters a little.
It's maybe slightly higher hot... (or i'm just telling my self that to make me feel better).

Driving it, better pressure rise than before, goes over 40... it seems a little delayed tho.

I swapped oil filter brands for why the f not, no change.

Maybe it's something with the bypass in the pump it self?
I did look to see if i could get to the bypass to clean/inspect, but it's blocked by the front cover.

Calling it good enough.
I have AFM disabled, and its plenty high enough for a non DOD/AFM engine IMO.

Still odd that it suddenly dropped...

 

[mikeyss]

....what did I do to my GMT900 today... I wanted to fix it but this happened:

 

[Just Fishing]

 

[iamdub]

“Soon”..? Tease.

The deed has been done, sir.

 

[Just Fishing]

already thinking about that cam swap/full DOD delete.

I figure if i need to pull the front cover and pan again, I'm going all in.

 

[89Suburban]

At the "Kicks on 66" car cruize and show today with the '33 Street Rod and had a helicopter land almost on top of it.... Lol

Sent from my SM-G930V using Tapatalk

Sweet

 

[08z71bgm]

....what did I do to my GMT900 today... I wanted to fix it but this happened:

View attachment 260347

Looks like the piston took a break from hard work.

 

[avalonandl]

....what did I do to my GMT900 today... I wanted to fix it but this happened:

View attachment 260347

Do a 6.2....that engine is toast...

 

[Tonyrodz]

Do a 6.2....that engine is toast...

He did have a 6.2.

 

[cmatt]

So a I picked this up to put in my 12 Suburban. Recommendations on where to get it programmed?

Sent from my iPhone using Tapatalk

 

[Tonyrodz]

So a I picked this up to put in my 12 Suburban. Recommendations on where to get it programmed?

Sent from my iPhone using Tapatalk

For mileage?

 

[mikeyss]

Do a 6.2....that engine is toast...

This is a 6.2 L9H. What i thought was a bad lifter ended up being a valve seat that was slowly breaking, and finally dropped down into the cylinder.

 

[Doubeleive]

So a I picked this up to put in my 12 Suburban. Recommendations on where to get it programmed?

Sent from my iPhone using Tapatalk

speedometer shop, where did you get it? when I bought mine they programmed it to my vin and mileage

 

[gooffeyguy]

speedometer shop, where did you get it? when I bought mine they programmed it to my vin and mileage

Could a Tech2 do it?

Sent from my SM-G930V using Tapatalk

 

[Doubeleive]

Could a Tech2 do it?

Sent from my SM-G930V using Tapatalk

from what I understand the tech2 can only be used if it is a 100% brand new cluster, wont work if it is used

 

[Sam Harris]

This is a 6.2 L9H. What i thought was a bad lifter ended up being a valve seat that was slowly breaking, and finally dropped down into the cylinder.

Do Not like.

 

[Just Fishing]

I have been thinking about buying a cordless impact but decided on this one thanks to you. The others were $200 without a battery and are big. I like this compact design with about the same torque.

I used the new impact for the first time yesterday and i love it.

For the size it's really quite powerful.
Running it at about 110psi.

I ran it pretty good out of the box to seat the impeller things, plenty of oil etc.

It's my new go-to impact.