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

[Rocket Man]

I too use nothing but LubeLocker for anything they make gaskets for. I’m using their trans pan and diff gaskets right now. Exceptional quality, reusable etc. Never had a leak. Just need to follow torque specs and make sure nothings bent or warped.

 

[992dr]

There cheap and they bend or warp easily if it was leaking there is a reason why...

Gotcha, just ordered one

I too use nothing but LubeLocker for anything they make gaskets for. I’m using their trans pan and diff gaskets right now. Exceptional quality, reusable etc. Never had a leak. Just need to follow torque specs and make sure nothings bent or warped.

I appreciate your info, I'll look into them tonight.

 

[pwtr02ss]

Gotcha, just ordered one


I appreciate your info, I'll look into them tonight.

I also recommend the lube locker. I've used two of them and to my knowledge, both sealed up fine. They are reusable too.

 

[SmileB44Death]

Finally got those 33s installed. I also got a oil change and told them the Mobil 1 is in the back but they unfortunately did not use it… lastly I got around to finally cleaning up the leather

 

[Monz11]

I too use nothing but LubeLocker for anything they make gaskets for. I’m using their trans pan and diff gaskets right now. Exceptional quality, reusable etc. Never had a leak. Just need to follow torque specs and make sure nothings bent or warped.

Use OE torque specs & follow the torque sequence, i.e. like heads

 

[RooTBeeRthe1st]

Finally got those 33s installed. I also got a oil change and told them the Mobil 1 is in the back but they unfortunately did not use it… lastly I got around to finally cleaning up the leatherView attachment 395221

Good looking meats on that caddy!

 

[RooTBeeRthe1st]

Was getting low on fuel, flipped through the DIC curious as to how many miles I had driven on the tank so far. This tank was roughly 67% ethanol-up from the last tank that was 46%. Happened to catch the palindrome on my odometer.
Proceeded to drive past some horses, donkeys, and cattle, which turned into rolling hills with a mountainous background on my way to the corn station.
We've gotten so much rain this year, never seen everything so green around here. It's weird actually experiencing spring. Lol

22.5gal of corn brought the content up to 72%

 

[iamdub]

22.5gal of corn brought the content up to 72%

Legit. I don't think I've ever measured higher than mid-60s percentile here.

 

[pwtr02ss]

Legit. I don't think I've ever measured higher than mid-60s percentile here.

Did you change anything in your tune to be able to run e-85 or does it correct on its own? I know there are two tables and I didn't compare that section when I was comparing yours to my stock tune. Laptop is dead and if I don't ask now, I'll forget about it

 

[iamdub]

Did you change anything in your tune to be able to run e-85 or does it correct on its own? I know there are two tables and I didn't compare that section when I was comparing yours to my stock tune. Laptop is dead and if I don't ask now, I'll forget about it

As I understand it, it's supposed to adjust on its own based on the measured alcohol content. After you add X amount of gallons to the tank, a relearn is triggered that, IIRC, takes at least seven miles. It's supposed to adjust the fuel and timing tables based on the ALC %. This is why I never ran it before all the engine work which included new O2 sensors. Mine would never read higher than 22% even when I physically tested it to be ~65%. With a fuel that requires more volume just to be on par with E-0, you can only lose power if it's only adjusting for a third of what's actually there. Never mind the lack of timing advance. I've been running corn for a couple of months now (on third tank of it at the moment) and the last two samples taken from the rail have measured within 2% of what my "virtual sensor" calculated. I'd like to go to the track but our ~55° evenings are long gone. The 80+ degree temps we have now would probably more than offset any gains the ~65% ethanol yield. I could run it on a tank of 93 then on a tank of E-85 during the current temps. I'd datalog, too.

The ethanol tables aren't the same as the "high octane" and "low octane" tables. My tuner didn't do anything specific in the ethanol tables. My guess is that they're based on the high octane table and adjust on their own from there, using the knock sensors as "feelers" for spark advance.