During the last couple of weeks in May, General Motors began sending letters to owners of C7 Corvettes to notify them of a potential issue with their Corvette’s fuel tanks. Based on those chiming in on the forums, the notice covers Corvettes built from 2014-2017 and includes all models (Stingray, Grand Sport and Z06).
In the letter GM says the following:
“This letter is intended to make you aware that some 2016 model year Chevrolet Corvette vehicles may have a condition where cracks on the top surface of the left fuel tank pump module flange, may cause fuel odor, or a loss of fuel on the ground. A Check Engine lamp may illuminate if the fuel tank is less than half full.”
A copy of the letter (via GM Canada) to a 2016 Corvette owner can be viewed here:
For those C7 Corvettes that may be impacted by this fuel tank issue, GM has automatically added a supplemental extended warranty to your Corvette. The special extended coverage is for 10 years from the date your vehicle was originally placed into service or 120,000 miles, whichever occurs first. The extended warranty would only cover repairs to the fuel tank and related systems during that time period.
An owner on the Corvette Forum that goes by the handle of rmorin1249 says his Corvette suffered from the leaking fuel issue and has since been fixed:
“I think it was the seal around the fuel sending unit. Very strong fuel smell especially when parked in a closed garage. Repair required disassembling the rear half of the undercarriage and dropping both tanks. A real PITA. Dealer did a good job but car was out of service for several weeks.” He adds that he is “not an attorney but I feel this is a very serious potential safety issue. If you smell raw fuel, take your car to a GM dealer immediately.
To see if your 2014-2017 Corvette is one of those with the potential issue, you can check your vehicle at my.chevrolet.com or call Chevrolet customer assistance (with VIN in hand) at 800-222-1020 to see if your Corvette has the new supplemental “Special Coverage #17469”
Chevrolet is calling this an extended service warranty. It covers the left side fuel tank and related parts, including the primary fuel pump, though is primarily for cracks on the top of the tank itself. Symptoms include: check engine light, smelling fuel vapor, and/or fuel leaks on the surface below the car.
The good news is that it’s doesn’t appear that the leaky gas tank issue is widespread with just several cases reported that we could count on the forum. Previous generation Corvettes from the C5 and C6 years have also had their own issues with the fuel tanks so we’re glad to hear that Chevrolet is aware of the issue and special coverages have already been put into place.
[RECALL] GM Recalling All 2014-2017 Corvettes For Air Bag Software Defect
[RECALL] Qatar Issues Recall for 2014-15 Corvettes for Transmission Reprogramming
[RECALL] 2014 Corvette Stingrays Recalled for Misaligned Fuel Fill Pipe