Evap system o-rings

[setha8]

Does anyone know either what size or if there is an aftermarket o-ring replacement for this particular evap connector?

Edit: To remove the confusion here at the top of the thread, I'm adding a graphic of the correct connector, i.e. the one with the slide locking tab. Note, the "cheap drawing" is from Charm's page on hose connector styles for the 2012 Suburban 5.3. Number 1 can be found on the fuel pump, number 2 can be found on the PCV rocker cover connector (line to intake manifold), number 3 can be found on the evap canister (line to fuel tank), number 4 can be found on the purge valve connector (line to rear of vehicle), number 5 can be found on the canistor connector (line that goes to solenoid / vent valve). Fun times. I guess GM went from having mainly two styles to using all five, plus a sixth that I show here.

 

[Joseph Garcia]

You've given us nothing to go on, other than a cheap drawing. How about make/year/model/trim of the truck to start with, as the O-ring may be different for different versions.

Do you have a part number for the evap connector? You could look it up on GMPartsDirect.com from the exploded diagram of the evap system. It may even show the O-ring with a part number, if it is replaceable.

 

[Fless]

Looks like a bayonet (twist) type connector, which I've never seen, but I don't get around much. Nos. 1 & 5 are most common on our vehicles.

Can you tell us what vehicle it's on, and where in the evap system it lives?

 

[setha8]

Sorry, I really thought anything that used that particular connector only had one style for this generation so I didn't realize there might be version differences by year. This is on a 2012 Suburban, and there's two places this exact connector is used. One of those is the long evap line that runs the length of the vehicle on the underside and the connector is from that line to the evap canister. This line terminates at the purge valve on the other end (though the line is segmented in a couple places). The problem in pointing out the part number is that it is a bunch of lines all in one SKU. That is GM 25860204. But if you go by the picture, it's like a bundle of 3 or 4 different lines that go between the fuel pump, evap canister, etc. And the pictures on the GM page only show a few of the different connectors, and not this particular one.

The other place I see that exact same connector is the PCV valve hose on the driver side rocker cover. Earlier models in this generation had a different style for that hose, but the 2012 had changed to a hard plastic tube from PCV to intake manifold. This part number is GM 12597774.

But I'm looking for the o-ring in the connector to the evap canister. It looks to be the same size though. I have come up empty looking for a P/N for just the o-ring. That's why I asked here.

 

[SpareParts]

Can you just go to parts store and match it up?
Around here if i go the farm co-op they have several bins with O rings and i have never failed yet to get what i needed.

 

[OR VietVet]

Sorry, I really thought anything that used that particular connector only had one style for this generation so I didn't realize there might be version differences by year. This is on a 2012 Suburban, and there's two places this exact connector is used. One of those is the long evap line that runs the length of the vehicle on the underside and the connector is from that line to the evap canister. This line terminates at the purge valve on the other end (though the line is segmented in a couple places). The problem in pointing out the part number is that it is a bunch of lines all in one SKU. That is GM 25860204. But if you go by the picture, it's like a bundle of 3 or 4 different lines that go between the fuel pump, evap canister, etc. And the pictures on the GM page only show a few of the different connectors, and not this particular one.

The other place I see that exact same connector is the PCV valve hose on the driver side rocker cover. Earlier models in this generation had a different style for that hose, but the 2012 had changed to a hard plastic tube from PCV to intake manifold. This part number is GM 12597774.

But I'm looking for the o-ring in the connector to the evap canister. It looks to be the same size though. I have come up empty looking for a P/N for just the o-ring. That's why I asked here.

Look at the Signatures of the members that responded and you will see how to avoid vehicle confusion.

I am with @Fless on this one. I have never seen a "Bayonet" type mount on any EVAP lines. Not saying they cannot be there but just have not seen them.

If it is like so many other posts/threads about EVAP lines and o-rings here, you will likely be better off replacing the complete line than just the o-rings. happens so many times here.

 

[Joseph Garcia]

^^^^^x2^^^^^

 

[setha8]

Can you just go to parts store and match it up?
Around here if i go the farm co-op they have several bins with O rings and i have never failed yet to get what i needed.

It's missing, that's the problem. Apparently I must have blown it out when I was clearing all that stupid charcoal out of the line.

Look at the Signatures of the members that responded and you will see how to avoid vehicle confusion.

I am with @Fless on this one. I have never seen a "Bayonet" type mount on any EVAP lines. Not saying they cannot be there but just have not seen them.

If it is like so many other posts/threads about EVAP lines and o-rings here, you will likely be better off replacing the complete line than just the o-rings. happens so many times here.

GM charges $450 for that mess of hoses. Normally I would do exactly that, except via Rockauto. Even there the price is so much more than if I can just find an o-ring that will work. Hence the topic of this post, seeing if anyone knows. I may just go to a junk yard and scavenge one.

I did make one mistake here, it's been a year since I was up there replacing canister and vent valve, and GM used THREE DIFFERENT (argh!) connectors for the vapor canister. That one is not the bayonet, though the bayonet IS the one on the PCV hose (in a 2012 Suburban 5.3) and you can see it when looking up GM 12597774. Sorry for the confusion. The style of the evap line connector that connects the line to the canister side is actually this one. But regardless of the style of the connector, like the bayonet, there is an o-ring in the neck that provides seal. And that's the focus of my question.

 

[Fless]

I did look up those hoses and see that the twist connector is used. If you can pick out the old o-ring without destroying it, I've had success at NAPA finding the correct size. They have a tray with various o-rings to match sizes, if that's an option for you.

 

[SpareParts]

If i was in this position i would just go buy a few about what i think the right size is. Under a $1 each it would be worth it rather than going through all this effort and trouble.

 

[houstontaylor]

On my 2003 Tahoe I just cut off the damaged connector and replaced it with the appropriately sized fuel hose directly to the canister nipple. Find the fuel hose size to work was a little tricky but I was eventually successful.