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

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dkad260

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This is from the shop manual. Subscribe to it at AllDataDIY.
I wonder if there was a revision made at some point.

There are many posts and links to data sheets that show 15-30, as well as 14-19 inch pounds.

I'm right at 18-19 so that should work...hope so anyway..lol.
 

swathdiver

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I wonder if there was a revision made at some point.

There are many posts and links to data sheets that show 15-30, as well as 14-19 inch pounds.

I'm right at 18-19 so that should work...hope so anyway..lol.
The manual is kept up to date. I could check a manual copy if you want, what are you referring to?
 

the_tool_man

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Will one from an Escalade work with no modifications or gaps? I know a guy that has two black ones he's parting out.
That's what I used on my Yukon. It's the same at the ends where it matters. The difference is the width of the CHMSL lens. What's cool is that the Eagle Eyes fully-lit spoiler uses the same lens shape as OEM Escalade, so the light can be swapped to and OEM Escalade spoiler and fit perfectly.
 

dkad260

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The manual is kept up to date. I could check a manual copy if you want, what are you referring to?

Rebuilding the rear diff, (8.6")

Seems that 14-19 inch pounds of pinion preload is what's documented, and there's a few articles showing 15-30.

I can't tell if that's a revised figure, or maybe pinion with carrier preload.

It's all back together and I had 18 inch pounds of pinion, and about 25-27 ish total of pinion and carrier with the 3.42 ratio so all should be in spec.
 

iamdub

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I've been tempted to try it in the 6.2. What is your MPG hit with E85?

Consistently down from 22 to 17.

It's still a win cuz I have to run high octane, so 93 or E85 are my only options. That 5 MPG is a 22% loss, meaning it's taking 22% more fuel than with 93. But, the E85 is 28% cheaper than the 93 (on this particular day the 93 was $3.95). So I'm getting what should be around the same octane as 93, if not more, at a 6% savings. Then there's the other benefits of E85 such as its cleaning and cooling properties.

Also, it's never 85% anywhere I've gotten it from. It has always been right around 65%. If it were 85%, I'd get a little less MPG. It'd still be a win financially. The rest of the benefits are inherent. The only drawback is needing to refuel sooner. I can live with that.
 

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