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

[NGAneer]

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

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.

 

[nixxxster]

Changed the Sub to Black Bear 91 tune

 

[1993 sierra]

Added some 26" replicas on my Escalade..

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[Jonah52]

Going to sound AWESOME!

Intake and tuner on way as well. Lol she has now been dubbed "the mom rocket" hahaha

 

[08grey]

A few pics of how bad the valley pan was! View attachment 73044View attachment 73045

View attachment 73046

How long did it all take?

 

[DaRosa218]

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]

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.

 

[DaRosa218]

Added some 26" replicas on my Escalade..

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Nice, I want your Stock 22's! LMAO Im thinking of actually lowering mine

 

[DaRosa218]

I found these today and actually considering lowering my Z71. Reason why I didn't at first was the factory fender flares that come with the Z71's might look wrong. As you can see in the pics, It actually looks sweet with the Z71 flares and TBSS Replica's!!!

 

[1993 sierra]

Nice, I want your Stock 22's! LMAO Im thinking of actually lowering mine

Sold them already bro

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