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

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BG1988

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as swathdiver said

VLOM solenoids depend on clean oil to function properly, other wise your AFM will be subject to failure
 

R3cord303

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Ok, got it. What's the Viscosity Index of the oil you are using? Do you have the ASTM D445 and D4683/D4741 specs?

What were you using previously (if you know) when the lifter was making more noise?
It makes noise intermittently with the 5w-40 Rotella T6 but I don’t know the detailed specs beyond that. Not loud like when you think of a lifter tick. But you do hear a tap tap tap noise when its doing it and you’re next to a wall like in a drivethru.
 

BG1988

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I’ll just turn it off here in two weeks that way the VOLM solenoids never need to function at all. Hopefully delete it ASAP
would it turn off if you disconnect the wires ? or CEL?


like the V-8-6-4 days?
 

iamdub

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I didn't do anything but drive it but I did find some new information I didn't know about, went out and looked at mine and sure enough there is a dimple in the plastic

View attachment 225233

I almost wanna drill mine and plug it at home so if I'm out somewhere and it fails, I won't need to worry with a drill or anything. I found some plugs with an embossed texture on Amazon: https://www.amazon.com/Plastic-Snap...SWZ6Y6YMZDR&psc=1&refRID=58E6TKBGJSWZ6Y6YMZDR


Although I'd be one to get a metal electrical knockout plug and spray paint it or polish it for dat billet look, yo :

5091.jpg
 

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