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

[avalonandl]

Blue Light Special

 

[Sparksalot]

Sorry, I’m confused by your post. You set the tire pressure setting in the truck at 25 and your light comes on below 37?

That’s correct.

 

[gooffeyguy]

25 is below 37, so what's the problem? Lol

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[avalonandl]

Mine are rusted and got them out no problem. Use the right size screwdriver. Hit it with a hammer with pressure and turn it on impact. The shock breaks then loose.

Got one light changed, wd40 did the trick with the right screwdriver.

 

[sarneson91]

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?

 

[George B]

Light didn’t come on at 29 but maybe it would take some time. Ran out of time.

Tested my new setting for the TPMS. Light comes on at 29 PSI now. That would give me a little more time to get a repair accomplished.

 

[kbuskill]

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?

I don't have an answer for you unfortunately but this reminded me of something I was going to mention.

We should start a thread and maybe get it stickied with all the guys who have a Tech2 and would be willing to help someone out local to them with maybe just City/State or Zip code/State info so as not to reveal home addresses and such.

I'm not sure which section would be appropriate and most visible or I would start it. Maybe the "Tech" section???

BTW, thank you for your service.

 

[a4edwin]

I don't have an answer for you unfortunately but this reminded me of something I was going to mention.

We should start a thread and maybe get it stickied with all the guys who have a Tech2 and would be willing to help someone out local to them with maybe just City/State or Zip code/State info so as not to reveal home addresses and such.

I'm not sure which section would be appropriate and most visible or I would start it. Maybe the "Tech" section???

BTW, thank you for your service.

Regional section would be appropriate

 

[Fless]

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?

Vacuum or hydroboost brakes?

Have you checked for misfires or a vacuum leak?

 

[Doubeleive]

Regional section would be appropriate

ya but nobody uses the regional section

 

[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

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[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

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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.