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Discussion Starter · #1 ·
Hey everyone...just a heads up.

Seems the issues we faced with the 5th gen Camaro exists with the new Vette as well. 75% of the C7's that come in here for header installs have seized front 02 sensors FROM THE FACTORY. Seems like the heat generated at that particular spot on the manifold is causing the threads to "weld" - making it impossible to remove them to swap into the headers. The problem is so prevalent, I keep about 6 sensors in stock at any moment just for this reason. They are about $60 from dealer...if they can get em.

So, if you plan on installing longtubes, better grab a set just in case.

We've also noticed that the pass side sensors are the worst. I have had a few drivers come out, and not the pass side....or worse, both are stuck.

Not cool GM.

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Wow, what are people supposed to do five to eight years from now when an O2 sensor goes bad and needs to be replaced? What is supposed to be a quick and easy job just got super $$$!
 

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Discussion Starter · #4 ·
Wow, what are people supposed to do five to eight years from now when an O2 sensor goes bad and needs to be replaced? What is supposed to be a quick and easy job just got super $$$!
Yep - almost makes it worth installing headers at that point!

Penetrant won't help Erik?


PB blaster?
You'd think heat and penetrant would work Glen, but this isn't an issue with rust or corrosion locking threads together. The threads literally are wiped clean off the sensor when trying to remove. I busted a few breaker bars, and have snapped off a few sensors in the manifolds trying to get them out. I think we have one sensor which actually screwed out after hitting it with gas, and the threads we're gone making it useless.

I am surprised more are not having this issue and posting about it.

I have 6 manifolds here, all of which have stuck 02 sensors. Maybe one day we can try to get one out lol.
 

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Hey everyone...just a heads up.

Seems the issues we faced with the 5th gen Camaro exists with the new Vette as well. 75% of the C7's that come in here for header installs have seized front 02 sensors FROM THE FACTORY. Seems like the heat generated at that particular spot on the manifold is causing the threads to "weld" - making it impossible to remove them to swap into the headers. The problem is so prevalent, I keep about 6 sensors in stock at any moment just for this reason.
That's good to know. When I get my LRG home from the dealer, and put her on the lift for the CAGS bypass install, I'll remove the O2 sensors and treat them to some anti-sieze.

I have no plans for headers, but all O2 sensors eventually need replacement.
 
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Discussion Starter · #6 ·
That's good to know. When I get my LRG home from the dealer, and put her on the lift for the CAGS bypass install, I'll remove the O2 sensors and treat them to some anti-sieze.

I have no plans for headers, but all O2 sensors eventually need replacement.
Good luck brother!
 

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What we usually do, is heat the area up with a torch and douse it with PB. It makes a bunch of smoke, but if you do that and let it sit for about 30 minutes, they usually come right out. I learned this trick after tearing up a ton of the Camaro sensors. The problem is that GM didn't use enough anti-seize from the factory. It'll bind up, and tear all the threads off of the sensor as you have seen happen.
 

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PB?
 

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Ah, thanks. I haven't used anything but WD-40 for that, but I just Googled "PB Blaster" and it does have great reviews with people saying they like it better than WD-40.
 
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