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

[R3cord303]

Went to Autozone and they put their tester on the tahoe. Batterys real ****** up. Bought one of the Autozone Platinum AGM batteries. If money wasn’t so tight I’d have gotten two for a dual battery setup. Next time I will!

 

[89Suburban]

What is this oil line setup? In front of the valley pan. And what is that angled 10mm bolt right next to it sitting at an angle?

 

[wjburken]

What is this oil line setup? In front of the valley pan. And what is that angled 10mm bolt right next to it sitting at an angle?

That sure looks like your coolant crossover air bleed pipe to me.

 

[R3cord303]

What is this oil line setup? In front of the valley pan. And what is that angled 10mm bolt right next to it sitting at an angle?

That sure looks like your coolant crossover air bleed pipe to me.

+1 for coolant line. I wish I had seen this before changing that battery and I'd have looked at mine while I was out there to confirm. If it goes to the heads it is for sure a coolant line

 

[kbuskill]

What is this oil line setup? In front of the valley pan. And what is that angled 10mm bolt right next to it sitting at an angle?

The "oil line" is actually the crossover line for the steam ports on the heads.

 

[89Suburban]

Yikes

 

[iamdub]

Thanks man!! should I replace the oil pressure switch and screen while it is apart? Do I have to worry about knock sensors in the cover? I seen that in some videos but I think that is for the vortex motors? Is there orings Under the cover? I hate typing on the damn phone!!!!

If it's in the budget and especially if they're original- yes. Murphy's law says yours will fail soon after you have everything reassembled. Use an ACDelco brand sensor.

No knock sensors under the cover. The Gen 4 engine has the knock sensors bolted to each the side of the block, just above the oil pan.

Technically all of these are "Vortec" engines. What you were seeing is some Gen 3 and some Gen 4 videos. Your engine is a Gen 4.

O-rings under the valley cover? Yes. There's the main gasket and two different sizes of O-rings for the towers and solenoids. BTW, it's technically known as a "VLOM" (Valve Lifter Oil Manifold). I should mention that there's an updated VLOM. But, if you're not gonna use AFM, I'd guess your old one is fine since the solenoids aren't being cycled.

 

[iamdub]

I have some AFM delete parts leftover from my new engine if you'd like to buy some of them. Totally down to let them go for super cheap. I've got a full set of rockers, a full set of lifters that are matched to a Jasper step up non afm camshaft, I think I've got a valley cover, a timing chain sproket, and I think even a full head gasket/timing cover gasket kit.

You running aftermarket rockers on your cammed motor?

If the rockers are factory pieces, I may be interested in them if PawPaw isn't.

 

[89Suburban]

Any quick and easy fixes for this besides replacing the whole thing or using scotch tape? Any secret squirrel internet fixes?

 

[R3cord303]

You running aftermarket rockers on your cammed motor?

If the rockers are factory pieces, I may be interested in them if PawPaw isn't.

Yes! They are stock rockers. I dont know if they’re clones or oem gm ones. Whatever Jasper uses. I am running upgraded trunnion rockers. Texas Speed sells some on their site. Dont remember what brand.