Guys I need help figuring out this engine rattle

[Dustin Jackson]

@FasterBass I didn't notice anything yesterday but I plan on double checking the cylinder wall.

@TollKeeper I ordered a kit from Texas speed as well as a L33 camshaft and an assortment of other gaskets and parts I will need to put it back together.

Which seals and gaskets would you guys reuse putting it back together?

 

[JohnCal]

Sounds like a bearing to me… Start checking with the mechanics stethoscope or if you don’t have one use a long screwdriver to the ear

 

[NardDog]

Check the exhaust manifold bolts, These are notorious for breaking loose and making noise. Last engine i pulled had two broken one on each side of the engine.

 

[TollKeeper]

@FasterBass I didn't notice anything yesterday but I plan on double checking the cylinder wall.

@TollKeeper I ordered a kit from Texas speed as well as a L33 camshaft and an assortment of other gaskets and parts I will need to put it back together.

Which seals and gaskets would you guys reuse putting it back together?

I bought GM OEM from Amazon Warehouse, head gasket and exhaust manifold gasket. I reused my intake gasket, VLOM gasket, and steam pipe O-Rings.
For bolts, I bought some from Amazon Warehouse (either FelPro or ARP, cant remember) for the head bolts, and exhaust manifold bolts.

My engine is aluminum, so giving you those part numbers wont work.
I did save about 100 bucks doing Amazon Warehouse. The were new, claimed to be open box. None of the boxes, or bags, were ever opened. Saving money for new, unopened, parts!

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My cam didnt get wiped, so for the other parts you will have to search.

Sometimes you can get a gasket kit pretty reasonable on Amazon Warehouse too.

Edit: After this repair, you still have to do a VLOM modification, this will ensure you oil pressure stays up, and accurate guage. Even if you tune out the DOD, the solenoids in the VLOM are known issues, and cause oil pressure issues.

VLOM Oil Galley Feed Plug | Crazed Performance

This is the plug to disable the vlom from working or leaking when changed per my video instructions. (This is an updated version and not like the one seen in the original video.) Works on 2005 to 2014 GM DOD/AFM equiped vehicles. If your vehicle is newer (2014-2018) it will still work but needs...

www.crazedperformancerepair.com

Dont be afraid of Mahle gaskets either. From what I am told, they are a OEM supplier for GM. In my Case the gaskets were just cheaper to go with GM branded.

 

[Dustin Jackson]

@TollKeeper The Texas Speed AFM delete kit I ordered will come with a Non-AFM VLOM, besides that is there anything else I need to do with the VLOM system to make it non-AFM?

 

[TollKeeper]

Not sure on that one.

The ECM is still a AFM/DOD ECM, so if you remove it, and take the AFM/DOD out in the tune, I would imagine its still going to look for the system, even thou it wont activate it.

It has been done, but not by me, so I am sure its a easy answer.

Hopefully someone that has done that can answer.. And I know there are quite a few members that have.

 

[George B]

@TollKeeper The Texas Speed AFM delete kit I ordered will come with a Non-AFM VLOM, besides that is there anything else I need to do with the VLOM system to make it non-AFM?

Not sure on that one.

The ECM is still a AFM/DOD ECM, so if you remove it, and take the AFM/DOD out in the tune, I would imagine its still going to look for the system, even thou it wont activate it.

It has been done, but not by me, so I am sure its a easy answer.

Hopefully someone that has done that can answer.. And I know there are quite a few members that have.

The DOD needs to be turned off in the tune. You will either need a handheld tuner like a Diablo Intune, a tune from Black Bear Performance or find a local shop that can turn it off for you. The truck will look for it and I believe run in limp mode without it.

 

[Dustin Jackson]

@George B Already turned off with a blackbear tune so I'm good on that front.

 

[Just Fishing]

I did mine via hp tuners.
Bad part with hp tuners, it's not really "Straight forward" but tons of awesome diagnostics and stuff.
I always like to mess with transmission pressures right off the bat, so it just makes sense for me.

takes two licenses for our vehicles, when doing a pull uncheck "FSCM" option so you just have tcm and ecm.

Cheap way out is to just have someone else do the tune for you.
If you go hp tuners, i/m me and I'll help you.

 

[Dustin Jackson]

Forgot to update this thread. In July of 2022 I successfully completed my AFM delete and the Tahoe has been running great 5,000 miles on the AFM delete so far.