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

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DaRosa218

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Finished changing out Intake Manifold Gaskets, Valley Pan Gasket, Oil Pressure Sender & Screen and Cleaned Throttle Body with new Gasket. Runs much better and hopefully fixes my Oil leak as the Valley Pan Gasket was trashed.
 

DaRosa218

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A few pics of how bad the valley pan was!
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Dank Denali

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Did you go with the venom 250 or race venom?

Race Venom all the way, wasn't willing to downsize the stock 3.5" piping. Plus I liked the way it sounded on JJdenali's 07. I took a cold start idle and warm start idle/rev video earlier, will get them posted up soon!
 

93blkongreenpro

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Started breaking in my Rampage MT. Dam thing is huge. Had to take out half my of 3rd row seat.

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Sent from my SM-G935P using Tapatalk
 

NGAneer

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Truck is surging under de-acceleration and threw a P0430 Code. Time to see what's going on now :okay2:

It's a catalytic converter efficiency code. My wife's Buick threw this code last year. Had to get the cat repalced under GM's emmisions warranty. Tried swapping rear O2 sensors side to side and the code didn't move one side to the other and off to the dealer it went.

I didn't have any noticeable change in drivability though. Wonder if there's something else driving the condition that manifests in that code.
 

DaRosa218

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It's a catalytic converter efficiency code. My wife's Buick threw this code last year. Had to get the cat repalced under GM's emmisions warranty. Tried swapping rear O2 sensors side to side and the code didn't move one side to the other and off to the dealer it went.

I didn't have any noticeable change in drivability though. Wonder if there's something else driving the condition that manifests in that code.

I'm thinking it has something to do with the Intake manifold as I just replaced all the gaskets. I pulled the intake back off and going over everything again as we speak. If that doesn't fix it, I'm going to take it to a buddies Muffler shop and go all out with Headers, Hi-Flow cats all hooked up to my MBRP exhaust :)
 

DaRosa218

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How long did it all take?

Took me about a day (8 Hours) the first time. Now that I've done it I can disassemble, replace gaskets and reinstall in about 2 hours or less. The first time I ordered wrong gaskets and had trouble with the fuel injector clips which took up a lot of wrench time. The valley pan gasket for the AFM/DOD differs from that of a non-AFM/DOD LS.
 

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