Ouch
Thread Starter
Cruising
Joined: Oct 2021
Posts: 12
Likes: 3
From: Florida
Ouch
Big surprise. 2014 Z51 vert.My 8th corvette. 28,000 miles.
Had an odor of gasoline in my garage when tank was more than half full. No visible leak. No significant difference in gas mileage. Car at dealer now getting replacement of driver side tank. Cost unbelievable. $8000. Mostly labor. Gas tanks should outlast the car but my inquiry asking if GM would like to participate in the cost was firmly denied. Ouch!! Guess it’s still cheaper than buying another car.
Had an odor of gasoline in my garage when tank was more than half full. No visible leak. No significant difference in gas mileage. Car at dealer now getting replacement of driver side tank. Cost unbelievable. $8000. Mostly labor. Gas tanks should outlast the car but my inquiry asking if GM would like to participate in the cost was firmly denied. Ouch!! Guess it’s still cheaper than buying another car.
Race Director
Joined: Sep 2000
Posts: 11,146
Likes: 1,913
From: Missouri City, TX
More likely it is a cracked fuel pump plastic discharge fitting. Common failure with C6 driver side tank pumps. Entire pump has to be replaced with many hours to drop and reinstall the tank. Issue has not been so prevalent with C7 but plastic is plastic which gets brittle with time and temperature.
Drifting
Joined: Jun 2013
Posts: 1,300
Likes: 373
From: Iowa
Was this related to the recall?
https://static.nhtsa.gov/odi/tsbs/20...34767-9999.pdf
You can enter your VIN here to see if the recall applied to your vehicle. If it is then you shouldn't have to pay for the recall.
https://experience.gm.com/ownercenter/recalls#/
https://static.nhtsa.gov/odi/tsbs/20...34767-9999.pdf
You can enter your VIN here to see if the recall applied to your vehicle. If it is then you shouldn't have to pay for the recall.
https://experience.gm.com/ownercenter/recalls#/
Melting Slicks
Joined: Dec 2004
Posts: 2,541
Likes: 773
Wow. That would make me not want a Corvette anymore. (And then I would come to my senses the next day.)
I had a brand new Firebird many years ago and there was a microscopic hole in the tank. Only a vapor smell at first, Then a slow leak. A patch kit from an auto parts store did not help. Car was under warranty but GM would not replace the tank. Threatened to use my position as a staff writer on a daily newspaper. GM then replaced the tank. Seriously doubt that would work now.
As for your case, I have heard that is a 10 to 20 hour labor output. I would ask exactly where the leak is located. Some leaks can be sealed up without dropping the tank. Maybe take the cheap route and trade the car for a 2018, which is less prone to this issue.
With the help of a relative, I dropped the heavy tank on a Dodge Caravan so I could replace the fuel pump. I am not a mechanic and that took about two hours in a driveway. That was fairly straight forward and simple. Nothing like a C7.
I had a brand new Firebird many years ago and there was a microscopic hole in the tank. Only a vapor smell at first, Then a slow leak. A patch kit from an auto parts store did not help. Car was under warranty but GM would not replace the tank. Threatened to use my position as a staff writer on a daily newspaper. GM then replaced the tank. Seriously doubt that would work now.
As for your case, I have heard that is a 10 to 20 hour labor output. I would ask exactly where the leak is located. Some leaks can be sealed up without dropping the tank. Maybe take the cheap route and trade the car for a 2018, which is less prone to this issue.
With the help of a relative, I dropped the heavy tank on a Dodge Caravan so I could replace the fuel pump. I am not a mechanic and that took about two hours in a driveway. That was fairly straight forward and simple. Nothing like a C7.
Safety Car
Joined: Dec 2012
Posts: 3,875
Likes: 1,875
From: St. Louis Metro East IL
The recall in Post #3 is for the anti-siphon grid being out of place. The filler pipe gets replaced. There is no vapor or liquid leak. This recall was done on my 2014 in a few hours.
The fuel pump / tank flange leak is on this special coverage:
https://www.corvetteactioncenter.com...ange-1399.html
Good for 10 yr / 120K miles. Your 2014 has likely "aged out" of the coverage...
GL
Ron
The fuel pump / tank flange leak is on this special coverage:
https://www.corvetteactioncenter.com...ange-1399.html
Good for 10 yr / 120K miles. Your 2014 has likely "aged out" of the coverage...
GL
Ron
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Wow, that is one heck of a cost for the repair. Good luck getting the car fixed.
Drifting
Joined: Jun 2013
Posts: 1,300
Likes: 373
From: Iowa
Can you give us a breakdown of the parts/labor cost? That seems insanely high. Being generous that parts were $2000 and $6000 was labor that means they charged you 30hrs of labor assuming a $200/hr rate.
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Joined: May 2013
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From: New Jersey
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Good luck, make sure you are enrolled in GM Rewards to get some points back at least...
Melting Slicks
Joined: Dec 2004
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Thread Starter
Cruising
Joined: Oct 2021
Posts: 12
Likes: 3
From: Florida
Agree. My local corvette specialist ($165 per hour) suggested a dealership due to difficulty with the repair including sourcing the parts. He turned down the job. I took their advice and was kinda of trapped with the car on the rack and tank partially exposed. Zero negotiating power. Hopefully they will do superior job with repair.
Safety Car
Joined: May 2004
Posts: 4,628
Likes: 397
From: Madison Wi
My car had this issue - was not in the recall list. A dealership in town here made a call and got it covered, fixed it at no cost to me.
By the book this repair requires removing the entire drivetrain and rear cradle.
I researched another way - by instead removing the rear facia and some exhaust parts it is possible to detach the fuel crossover pipe allowing the tank to drop out without dropping the entire drivetrain.
The mechanic needs long thin arms to do this, but it saves a TON of time and gives you piece of mind that they didn't screw up the torque tube end play.
The dealership had no issues doing it my way.
By the book this repair requires removing the entire drivetrain and rear cradle.
I researched another way - by instead removing the rear facia and some exhaust parts it is possible to detach the fuel crossover pipe allowing the tank to drop out without dropping the entire drivetrain.
The mechanic needs long thin arms to do this, but it saves a TON of time and gives you piece of mind that they didn't screw up the torque tube end play.
The dealership had no issues doing it my way.
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Melting Slicks
Joined: Dec 2004
Posts: 2,541
Likes: 773
Ferrari - $1,200 - $3,000
Lamborghini - $1,500 - $3,500
McLaren - $1,500 - $4,000
Mustang GT500 $1,300 -$1,600
https://www.kbb.com/mclaren/fuel-pump-replacement/
https://repairpal.com/estimator/ford...ce=chatgpt.com
Advanced
Joined: Feb 2026
Posts: 81
Likes: 25
Typical fuel pump replacement costs:
Ferrari - $1,200 - $3,000
Lamborghini - $1,500 - $3,500
McLaren - $1,500 - $4,000
Mustang GT500 $1,300 -$1,600
https://www.kbb.com/mclaren/fuel-pump-replacement/
https://repairpal.com/estimator/ford...ce=chatgpt.com
Ferrari - $1,200 - $3,000
Lamborghini - $1,500 - $3,500
McLaren - $1,500 - $4,000
Mustang GT500 $1,300 -$1,600
https://www.kbb.com/mclaren/fuel-pump-replacement/
https://repairpal.com/estimator/ford...ce=chatgpt.com
Well. That makes me feel better. Haha. Good ole gm.
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$290. per hour....yikes! 
