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

[gat0r]

funny I ran over a stop sign and it didn't do shit but make a couple scratches

careful, i bet that stop sigh had a Prop 65 label

 

[Tonyrodz]

careful, i bet that stop sigh had a Prop 65 label

You know it did!!

 

[Doubeleive]

oh crap

 

[cmatt]

Changed the front hubs on thenewhoe. While I was down there, I did the sway bar links too. Holy carp, they were terrible. Both hubs were leaking.


View attachment 259730 View attachment 259731 View attachment 259732 View attachment 259733 View attachment 259734

Which end links did you use?


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[1BADI5]

Look at that post DoD/VVT delete oil pressure

 

[Just Fishing]

If that valve was gunked up, then your AFM system would look the same on the insides. Buildup is the #1 killer of AFM components due to the tiny passages all throughout. Gotta keep clean oil in it! You also can't flush the engine with harsh chemicals since they aggressively break up the crud in larger chunks. These chunks move through the system and get lodged in the oil passages in lifters, push rods, the solenoids in the VLOM, etc. You gotta gradually dissolve the deposits over time with the detergents in quality oil.

Do you track your engine's oil consumption? Have a catch can?

By the way, the torque specs are just as you found: 18 ft. lbs on the pan bolts and 106 in lb. on the two long skinny ones at the rear. DO NOT attempt to tighten those two rear bolts to 18 ft. lbs.

I haven't had the hoe very long, but i do plan on adding a catch can.
I have one on the old vette, pcv system would pass oil to the #2 cylinder... pita with the wide band 02 sensor and tuning.

After running with it for a while now, I'm sold on the catch can idea.


And it was something i noticed after the first oil change in the hoe.
I like to use a half can of seafoam in the oil every few oil changes, drive for a short time and then change the oil and filter.

I did that with the hoe and was amazed how bad the oil looked, it upset years of built up gunk.

Stupid oil change monitor...
In my wifes car i use it as a general reminder, but i go off of how the oil looks vs miles.

But then again, I'm pretty sure the hoe was someones heavy duty minivan... lol

Should have seen the brake fluid...

I also have noidea what kind of oil the po used.
Per the carfax, the oil changes were mostly done by the dealer, and just a few quick oil change places.

This is the Highest mile car i have ever purchased... lol

I always go by the 3-4k mile, or every season. What ever comes first rule.


I have been running this thing with the dod/afm disabled via hp tuners.

Think there would be any benefit to enable it for a short time after i have everything sorted to hopefully flush the system out a little?

Or better to keep it off until I'm ready/willing to do a full gut and a mild cam thrown in?

Also, i haven't noticed any change in the oil level.
But i also haven't driven it much yet.
Maybe a thousand miles or less.

 

[gooffeyguy]

Look at that post DoD/VVT delete oil pressure

View attachment 259830

Mine runs that high until it gets up to temp

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[the_tool_man]

I have been running this thing with the dod/afm disabled via hp tuners.

Think there would be any benefit to enable it for a short time after i have everything sorted to hopefully flush the system out a little?

Or better to keep it off until I'm ready/willing to do a full gut and a mild cam thrown in?

I'd leave it deactivated. My reasoning is that the lifters are held rigid by a pin that is retracted when AFM activates. If the pin never moves, the lifter can't collapse uncommanded unless a part physically breaks. If you turn on AFM, the pins may retract but not return to the "locked" position, leading to failure.

 

[07Burb]

Ordered up a set of new OEM exterior handles

 

[Rocket Man]

Ordered up a set of new OEM exterior handles

The OEM ones cost a bit but the aftermarket ones break so easy. Did you order chrome ones or are you gonna CM?