Locking Fuel Filler Door
Racer
Joined: Feb 2026
Posts: 475
Likes: 239
From: Pacific Northwest
Far be it for me to disagree with a YouTube expert...or call BS ...then again I wasn't making a video trying to show a problem.
My cap, when properly installed works fine.
Just went out to the garage and checked it again.
There is some longitudinal movement in the way the plastic filler tube is mounted to the car.
The thing that holds the GM cap on is a latch that goes into the inverted ring around the filler tube. As I said, both the Colorado and C8 have it.
If someone wants to buy and try a Ford cap, be my guest.
The thing that holds the GM cap on is a latch that goes into the inverted ring around the filler tube. As I said, both the Colorado and C8 have it.
Even if it would snap off...how many bad guys are going to check it?
If it looks locked that will deter most bad guys.
My cap, when properly installed works fine.
Just went out to the garage and checked it again.
There is some longitudinal movement in the way the plastic filler tube is mounted to the car.
The thing that holds the GM cap on is a latch that goes into the inverted ring around the filler tube. As I said, both the Colorado and C8 have it.
If someone wants to buy and try a Ford cap, be my guest.
The thing that holds the GM cap on is a latch that goes into the inverted ring around the filler tube. As I said, both the Colorado and C8 have it.
Even if it would snap off...how many bad guys are going to check it?
If it looks locked that will deter most bad guys.
Last edited by JeBC8; May 20, 2026 at 11:35 PM.
Intermediate
Joined: May 2026
Posts: 31
Likes: 9
From: Northeast USA
Jerryu
What you posted is why I suggest a aftermarket device to cover the fuel nozzle hole.
Less intrusive to do the same job.
I looked at mine, and I believe a wine bottle stopper-like device with a key or digital lock would be the way to go to retrofit a lock.
To be honest, it would probably not have to be functional, just look the part if a bad guy opens the fuel door.
I have had my C8 for a week. I'm already planning the 2020-2023 trunk key retrofit, now this pops up.
I'm beginning to have second thoughts about GMs committing to building a world class sports car.
Perhaps my long time allegiance to Ford was correct.
What you posted is why I suggest a aftermarket device to cover the fuel nozzle hole.
Less intrusive to do the same job.
I looked at mine, and I believe a wine bottle stopper-like device with a key or digital lock would be the way to go to retrofit a lock.
To be honest, it would probably not have to be functional, just look the part if a bad guy opens the fuel door.
I have had my C8 for a week. I'm already planning the 2020-2023 trunk key retrofit, now this pops up.
I'm beginning to have second thoughts about GMs committing to building a world class sports car.
Perhaps my long time allegiance to Ford was correct.
I think it's a sign of the times honestly. A lot of brands are cutting small annoying corners to save money and it's baffling to me.
If it makes you feel any better, my daily driver is a $125,000 land rover that doesn't have the "option" of the sunglasses holder in the overhead console. It just has a piece of stamped shiny ABS plastic in the slot where the little sunglasses rotisserie (a part that probably costs them $1 to manufacture) normally goes.
Burning Brakes
Joined: Jun 2007
Posts: 878
Likes: 144
From: Little Egypt, USA
Got this from that other forum:
During the Corvette Team Engineers Saturday Q and A session at the Detroit GP Corvette Car Corral, I asked my above question (why is it gone?).
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims).
During the Corvette Team Engineers Saturday Q and A session at the Detroit GP Corvette Car Corral, I asked my above question (why is it gone?).
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims).
Drifting
Joined: Aug 2005
Posts: 1,318
Likes: 818
From: Melbourne FL
Got this from that other forum:
During the Corvette Team Engineers Saturday Q and A session at the Detroit GP Corvette Car Corral, I asked my above question (why is it gone?).
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims).
During the Corvette Team Engineers Saturday Q and A session at the Detroit GP Corvette Car Corral, I asked my above question (why is it gone?).
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims).
Racer
Joined: Feb 2026
Posts: 475
Likes: 239
From: Pacific Northwest
I'm questioning the last one. If humidity is the problem, all the C7s and C8s in Florida would have stuck pins. I can only speak for myself in FL, and I haven't had a problem in 6 years with a C7 and 2 years with a C8. It seemed like people were having issues in dry states too.
And I'm guessing a lot if other cars of various makes use similar technology and material...what are the chances that the Corvette alone used similar materials?
Hey, I want to give GM the benefit of the doubt, after all I just gave them a bunch of money, but that explanation sounds a bit BS-sy.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,982
Likes: 12,383
From: NE South Carolina
Got this from that other forum:
During the Corvette Team Engineers Saturday Q and A session at the Detroit GP Corvette Car Corral, I asked my above question (why is it gone?).
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims).
During the Corvette Team Engineers Saturday Q and A session at the Detroit GP Corvette Car Corral, I asked my above question (why is it gone?).
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims).
Last edited by JerryU; Yesterday at 07:14 AM.
Advanced
Joined: Apr 2024
Posts: 72
Likes: 51
The microphone was handed to Josh Holder and he said that there were several factors they considered: the fuel door lock was not going to keep a determined individual from accessing the fuel filler nozzle, weight savings from eliminating the lock (he acknowledged it wasn't much of a weight savings but they consider any weight savings valuable), the lock solenoid's location in the intake air duct caused disruption to the air flow, the solenoid's locking pin is made of nylon and when exposed to a humid environment, it would swell, causing the lock pin to get stuck, and there were instances of the lock solenoid making a "thunking" noise when actuating (the last two were customer reported problems and eliminating the lock reduced or will reduce the number of warranty repair claims). it reduced costs for GM. There, fixed that for you.
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