I want to delete or bypass the EVAP system in a 2012 Yukon Denali with a 6.2

[Mr. Goodbar]

I have that happen in my work van every now and then, I found that if I hold it at a certain angle it, doesn’t do it but if I stick it in and leave the handle in then it’ll not fill, this is a brand new work van too lol

 

[DeerLord]

Flip the gas gun upside down. Due to the angle of fill on my fleet of Isuzu NPRs that's the only way to avoid the issue you're having. Get back to us if this doesn't help.

 

[boomer]

Sick of this useless EVAP system and want it gone or bypassed. Anyone already done it?

I have been through the entire system and replaced all EVAP parts a few months ago and now I'm back to the pump shutting off again. I'm done with this and want it gone, ready to punch holes in the ozone.

Have you tried YouTube?

 

[rockyfatcat]

No lights or codes. Just difficulty filling up the tank because the fill pump at the gas station is shutting off every few seconds. I replaced the entire EVAP system with new parts a couple months ago due to this issue and now its back again. No requirement to smog where I live so I want to bypass or remove it all.

I've had hot rods that do not have EVAP systems and they run just fine. In fact I've got one now with a SBC 355 and no EVAP system.

Back in the early 80's in CA I owned a Chevelle that had a smog pump and smog inlet tubing to the engine block. After passing smog test for the year I removed the belt for the pump and plugged the tubes until the next year.

Let me guess, costco gas?

They have their pumps set up so tight they won’t allow you to top off. The nozzle at the pump sense the amount of air coming up from the tank And shut it off before you overflow.

Nothing to do with your car.

 

[harrycalahan]

Likely that your vapor canister or purge line is restricted. I have vehicles with and without evap systems that cannot fill up full throttle at filling stations. Modern station pumps move a lot of volume. More than some systems are able to vent at the same rate. Then theres the overly sensitive pump handles that click off entirely too easily. I normally have just the nozzle tip (about an inch) inserted in the filler neck and fill at the lowest rate. Never had an issue.

 

[testdepth]

Flip the gas gun upside down. Due to the angle of fill on my fleet of Isuzu NPRs that's the only way to avoid the issue you're having. Get back to us if this doesn't help.

I'll try it and thanks

 

[testdepth]

Have you tried YouTube?

Yes Sir and unable to find anything

 

[testdepth]

Let me guess, costco gas?

They have their pumps set up so tight they won’t allow you to top off. The nozzle at the pump sense the amount of air coming up from the tank And shut it off before you overflow.

Nothing to do with your car.

No Sir, mostly Circle K.

 

[imawoodsman]

Had similar problem w/ 07 Silverado. Gas Pump would shut OFF every few seconds.
VERY annoying when filling up.
PROBLEM, Tank vent was Clogged, Took filter apart & cleaned it.
Moved small filter tube from top of tank to less dusty place further forward.
This worked. Every 24 months or so I blow out the Little forward filter.
Poor design by Chevy.

 

[rockyfatcat]

Let me guess, costco gas?

They have their pumps set up so tight they won’t allow you to top off. The nozzle at the pump sense the amount of air coming up from the tank And shut it off before you overflow.

Nothing to do with your car.

.