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

[Doubeleive]

Been awhile posting but recently have been chasing the service stabilitrac, service traction control, service suspension, gremlin that makes the tranny have a hard 1-2 shift and the brakes pulse slowly when slowing down. At this point I’ve already bled the brakes, replaced brakes on all 4 corners, replaced front wheel speed sensors, and cleaned the contact area between sensors and axle(nobody near me has them in stock). Anyone have any suggestions as to what corrected their issues? Also I now live in Woodbridge Va (stationed in DC), anyone nearby <50 miles have a tech 2 that I can borrow to check what sensors are malfunctioning?

brake pulsing is going to be abs related, one of the sensors is lazy or needs a new hub, you can buy just a sensor and swap it left/right on the front (most common) and see if that fixes it, there like $25 at the autoparts store
**I see you replaced them already so it may end up being a hub

 

[Just Fishing]

Thanks, that might be helpful if you don’t mind. I’m looking at the one on the 6.0 but it looks like a different style

From the service manual,


pretty much you remove the "1" 10mm bolt to get the clutch face off.

If your lucky, that's it.

but you need to remove the pully to get "7" pully off.

 

[lowh07]

From the service manual,
View attachment 280852

pretty much you remove the "1" 10mm bolt to get the clutch face off.

If your lucky, that's it.

but you need to remove the pully to get "7" pully off.


View attachment 280853

thanks! Going to try tonight. It still spins so that’s good I think...

 

[Just Fishing]

And i got the new pump on last night.
Man that Melling high pressure/ high volume sure is a tight sob when new.

I even have a Melling timing chain set this time around!

I ended up lightly sanding the pump body to the crank pully fitment so i could get my thinnest feeler gauge in there.
Just a little lip in there...

then i used that as my "centered" guide.

 

[08z71bgm]

So curious question...

Whats idle and cruising oil pressure gauge look like?

Mine seems a bit low and if it’s going I would like to be ahead of it and find a replacement and pull this one.

 

[CaptainAmerica1]

20psi hot idle
At least 10psi per 1000 rpm.

 

[avalonandl]

I put 23 gal of e85 IN MY Denali last saturday when premium was 3.69 and E85 was 2.39. Even at Costco Premium is 3.29 in Bloomfield. As a consequence my mpg -city- is 11.8 where normally I run about 13.5. It does rev higher under full throttle... ;-)

 

[08z71bgm]

20psi hot idle
At least 10psi per 1000 rpm.

Mine is below that 20 line and I need to be WOT to hit 40+. Cruising is in the 30 range.

 

[gooffeyguy]

That gauge on the dash isn't accurate, it just gives a general idea.

I read my oil pressure using the Bluetooth dongle and Torque app

Sent from my SM-G930V using Tapatalk

 

[08z71bgm]

That gauge on the dash isn't accurate, it just gives a general idea.

I read my oil pressure using the Bluetooth dongle and Torque app

Sent from my SM-G930V using Tapatalk

I’ll give that a shot. Forgot about it. Just looked down and noticed it today. Next time I go out I’ll see what it says in the torque app.