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

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kbuskill

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got my garage nearly ready for the ol hoe.
been slowly looking at parts.
any reason to not run the melling high volume high pressure pump?
looks like it has a better finish, and comes with the stock pressure spring...

I have the Melling HV/HP pump with the HP spring in it... no real issues other than the ECU thought the pressure was TOO high so I had to recalibrate the sensors output with a resistor so it reads lower on the gauge.
 

Tonyrodz

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I have the Melling HV/HP pump with the HP spring in it... no real issues other than the ECU thought the pressure was TOO high so I had to recalibrate the sensors output with a resistor so it reads lower on the gauge.
How long has it been in? 2 yrs? No other issues with it? Will you be able to tell if you have a low op situation, even with the resistor in place?
 

kbuskill

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How long has it been in? 2 yrs? No other issues with it? Will you be able to tell if you have a low op situation, even with the resistor in place?

It has been in for 70-75k miles, probably 4 years, I believe.

Yes the gauge is still fully functional it just reads about 15-20 psi lower on the gauge than it actually is at the engine. But if pressure drops or rises, so does the gauge... its not just a static reading.
 

Jason in DLH

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It’s actually been a couple days, but putting some finishing touches on the front end:

7D8854EF-B448-4DFF-A8A2-C07FEBA76E04.jpeg

Smoked the fog lights. Dipped the logo and the chrome piece on the hood (dang it takes a long time to spray that peelable rubber on...6 coats and you have to wait 15 minutes between coats). Wife doesn’t like it and the kiddo says it’s okay. I’m digging’ it though.
 

wjburken

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It’s actually been a couple days, but putting some finishing touches on the front end:

View attachment 262470

Smoked the fog lights. Dipped the logo and the chrome piece on the hood (dang it takes a long time to spray that peelable rubber on...6 coats and you have to wait 15 minutes between coats). Wife doesn’t like it and the kiddo says it’s okay. I’m digging’ it though.
Not my thing, but it’s cool if you like it.
 

Rocket Man

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Melling has some great information as well. That article by Summit isn’t really helpful for guys trying to correct an oil situation in a worn engine. Here’s a quick explanation on pressure vs flow that puts it in an easy to understand comparison. Melling has some videos and other articles that can help a person to decide on an oil pump. https://www.melling.com/wp-content/uploads/2017/03/pressure-vs-flow.pdf
 

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