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It appears the funnel will let you get past the trap door but there are safeguards further down that prevent you from getting a hose all the way into the tank.
Has anyone successfully used a syphon hose to remove fuel?
Picture from this thread: https://www.corvetteforum.com/forums...fuel-tank.html
It appears the funnel will let you get past the trap door but there are safeguards further down that prevent you from getting a hose all the way into the tank.
Has anyone successfully used a syphon hose to remove fuel?
I see from the thread at the link you posted, one person, with I think a 2020 model, claim to have successfully siphoned fuel. But later in the thread, the picture posted, shows a 2023. So perhaps the added that strainer later. That strainer looks sort of ominous actually - restrictive. He describes it as a "one way valve" "that does not open". Hmm.
The C8 has an anti siphon device in the fuel filler that makes it nearly impossible to siphon fuel. Fuel thieves these days just punch or drill a hole in the fuel tank. This is likely a contributing factor to why GM decided to eliminate the fuel door lock. Vandalism is still possible but it would take some effort to put something in the tank.
I'd be more worried about someone putting something in the fuel filler- pebbles, chemicals, etc. Why would that be difficult? Seems easy to do without a lock on the door.
I ordered in Feb and mine was built 4/1. An E-Ray. I noticed there was an actuator without a wire harness plugged into it in the driver side intake next to the fuel neck. Sure enough it's the fuel door lock actuator. Must be a funny April fools joke to include the actuator but not wire it into the harness and BCM. SMH.
I ordered in Feb and mine was built 4/1. An E-Ray. I noticed there was an actuator without a wire harness plugged into it in the driver side intake next to the fuel neck. Sure enough it's the fuel door lock actuator. Must be a funny April fools joke to include the actuator but not wire it into the harness and BCM. SMH.
My E-Ray arrived at the dealership on March 30th.That means that the joke was on us before April fools day.
How about an accessory to fix this?
Not much room to clear the door but think of a carrot or wine bottle stopper to go in the opening with a key at the top center.
Originally Posted by JVi
Ever have some clown pour a can of Coke into your gas tank? I have on my motorcycle and it would be way worse on a Corvette. This is ridiculous.
I agree the removal of this feature is more than concerning. I don’t see any reference to purchasing an actuator replacement to serve C8 models that have this feature and I believe if the harness is unmodified from those generations, a simple plug and play effort may still also remain functional. Another member responded that some countries require a locking fuel door so Chevrolet’s support for overseas models complying with that feature could well remain intact. I’m expressing wishful thinking but hopefully with some merit.
Last edited by Zymurgy; May 14, 2026 at 02:42 PM.
Reason: Fixed bad quote tags
Weird I didn’t know GM deleted the locking gas door. Mines a 2024 and it locks when I lock the doors. I probably wouldn’t worry too much about it if it didn’t have the lock mechanism. One less thing to break. Plus I don’t park anywhere that someone would be inclined to put anything in the gas tank. It mostly sits in a locked garage covered up.
One will no doubt be amiable for a 2026 and later Corvettes! They are sold now for other cars with capless fill!
This is for Ford/Lincoln! It is $29. Or wait for the one with Corvette Logo from GM for $75!
Just tried that model at Auto Zone.
The good news..with the low profile it fits under the C8 door.
The bad news is the locking mechanism won't work on a C8.
The plunger (or whatever you want to call ir) will sort of fit in the opening but its too wide at the top. It won't even sit on top properly.
The top would be a good part to use for a faux unit...basically to discourage anyone who opens the door...they may not test the lock itself, but you'd have to epoxy a thinner bottom on it or use a Dremel Tool to modify the stock unit.
They showed me their 2026 Colorado parts truck..it top is capless but has very different opening (Why GM?).
I ordered one of the official GM accessories from them. Unlike the one pictured above, ot is just a cap...think of a cap on a spray paint can or old fashioned shave cream can. There is a key lock at the 7o'clock position. That engages a lip..which the C8 does have, so it might work.
They'll get it in next week. If it fits, I'll keep it.
I'll let you know.
After I read your post, I went and check my car and it does indeed have the actuator just like your picture.
This is quite curious.......I wonder if poses a "fire hazard". Why would they install it but not connect it? It is an electrically activated device right there in the fuel fill pocket which may contain raw gas. Does it have potential to ignite fuel that is spilled in the pocket?
Has anyone been able to find the fuel door lock actuator part? I could not.
This is quite curious.......I wonder if poses a "fire hazard". Why would they install it but not connect it? It is an electrically activated device right there in the fuel fill pocket which may contain raw gas. Does it have potential to ignite fuel that is spilled in the pocket?
Has anyone been able to find the fuel door lock actuator part? I could not.
It's probably a stupid thought, but I wonder if it's possible to find a wiring harness to connect/splice.
It's probably a stupid thought, but I wonder if it's possible to find a wiring harness to connect/splice.
Since it was standard equipment for 2020-2025 and at least part of 2026 - one would think that the parts are available - both harness and actuator. I tried to find it on gmpartsnow but could not. Maybe someone else can find it. I would think a dealer could find it.
FWIW, why go thru the trouble of trying to retrofit earlier car mechanism. If you Search you will find a number of cars don't have gas caps OR locking doors. No doubt this company will make one for the Corvette as it looks like this removal started mid 2026. Heck most of my cars did not have a locking gas cap! My two C4 Vettes did not have a lock for the filler door. Had to buy a locking cap.
My C6 did have a locking door but this is what is what a search said: "The stock electronic fuel door is known to fail or fail to stay closed, sometimes requiring manual access via a pull cord in the rear cargo area. Recall that pull cord in the hatch!
During my two C7 ownership, saw many posts re locking door lid NOT unlocking: Quoting Google: "A common C7 failure point is the electric gas door actuator solenoid, which can leave the fuel door locked, making it impossible to fill up. The gas door can be opened by accessing the actuator rod through the rear passenger wheel well liner. Many owners bypassed this system by placing a small plastic fastener (scrivet) in the latch hole to prevent it from locking permanently.(After seeing many forum posts, ONE time had it happen to me when ready to fill my tank. Fortunately by cycling the lock/unlock a number of times on my FOB it opened. Recall I drive home with the gas door open AND I ADDED A SCRIVET!)
Perhaps after failures with the C6 (where at least they had a pull cord access) ; C7 (with no easy way to get the gas door open) and now some reports of the same with the C8, GM said heck: For those folks who want a Lock, they can do as Ford owner's do- buy one. We save some money on each car!
However they did miss a revenue opportunity. Instead of quietly taken it out mid 2026, they should have contacted the folks who make these "Locks" for other capless filler cars and asked then to make one for the C8.
Then announce we have a dealer sourced accessory WITH Corvette logo for $75! So seeing one you can buy for $12, GM would probably pay $5 and at $75 retail $37 Dealer cost a nice margin!
I'm less upset with them deleting it...as you say...one less thing to go wrong...than I am that they deleted it WITHOUT having a remedy in place. Stupid, stupid, stupid. Unprofessional.
They put locks on their cheaper cars, but take it off their halo car?
A world class sports car tainted by the organization that gave you the Vega.
As JerryU said they could make a few bucks.
I won't even use it most of the time since the car resides in a locked garage, but when I go into town or travel I want the security.
Like a lot of other places, the large town near me, which I avoid as much as possible, if filled with folks who think anyone with anything nice is fair game. And the local politicians and DA, knowing where their votes come from, have basically given up enforcing property crimes or vandalism.
