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Chevrolet · Known Issues

2014 Chevrolet Corvette Problems: 4 Known Issues

2014 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2014 Chevrolet Corvette has 4 documented known issues, with 3 rated critical. The most serious are Left Fuel Tank Pump Module Flange Cracks and Leaks Fuel ($0-$5,300 repair), Active Fuel Management Lifter Collapse Causes Engine Tick and P0300 Misfire ($2,500-$7,500 repair) and Crankshaft Thrust Bearing Wear Causes Stalling, Clutch Chatter and Launch Vibration ($3,500-$9,000 repair). Across all issues with published estimates, repair costs range from $200 to $9,000. DIY maintenance guides at au7o.io.

In This Article

  • Corvette Engine2
  • Corvette Fuel System1
  • Corvette Drivetrain1
  • Recalls8
  • FAQ
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In This Article

  • Engine2
  • Fuel System1
  • Drivetrain1
  • Recalls8
FAQ

All 4 Known Issues

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On the 2014-2019 Chevrolet Corvette, the Active Fuel Management (cylinder deactivation) lifters in the 6.2L LT1 and LT4 mechanically collapse or stick in their bores, producing a persistent top-end tick and a misfire that sets P0300. GM's own bulletin identifies four failure paths: a mechanically collapsed or stuck AFM lifter, internal locking-pin damage caused by oil aeration, a collapsed lifter seized in the bore, and a bent pushrod. Once a lifter seizes it can spin in its bore and destroy the lifter guide, and a failed lifter frequently wipes the corresponding camshaft lobe - which turns a top-end repair into a cam-and-lifter job or, in the worst case, engine replacement. GM revised this bulletin repeatedly through 2020 (15-06-01-002 through 15-06-01-002K), which is a fair indicator of how persistent the problem is across the LT-series V8 family.

This issue also affects: Buick LeSabre, Buick Park Avenue, Buick Cascada

Common Symptoms

  • Ticking or tapping noise from the top of the engine
  • Check engine light with random or multiple cylinder misfire
  • Rough idle
  • Loss of power
  • Misfire counts concentrated on one cylinder

How to Fix

Diagnose the misfiring cylinder and pull the valve covers to check whether the valves on the suspect cylinder are moving. Per GM bulletin 15-06-01-002K, inspect the camshaft for lobe damage while the lifters are out. If the valves are not actuating, replace the valve lifter oil manifold and the entire affected bank of AFM lifters - not just the failed one. If the lifter has spun in its bore, replace the lifter guides as well; GM lists lifter assembly 12645725, with valve lifter oil manifold kit 12660737 for the LT1 and 12660736 for the LT4. A wiped camshaft lobe requires camshaft replacement. If a lifter cannot be extracted, GM's bulletin acknowledges engine replacement as the endpoint. Because oil aeration damages the lifter locking pins, keep the oil at the correct level (dry-sump cars in particular must be checked at operating temperature) and stay on a conservative oil change interval with the specified Mobil 1 grade. Many owners performing the repair delete AFM with a non-AFM cam, standard lifters and a tune to prevent recurrence.

Typical repair cost:$2,500 - $7,500

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2019 Chevrolet Corvette, a damaged crankshaft thrust bearing allows excessive crankshaft endplay on both the LT1 and LT4. The symptom set differs by transmission, which is why it is often misdiagnosed. On manual cars owners report engine stalling, clutch chatter, and hard shifting into first gear or reverse - all of which get blamed on the clutch or the TR6070 gearbox. On automatic cars it shows up as a vibration on launch and a clunk or noise from the engine. GM bulletin 19-NA-217 identifies the root cause as excessive crankshaft endplay from a damaged thrust bearing, and specifies the endplay window as 0.0015-0.0086 inch. Because the failure is at the crankshaft, replacing clutches, flywheels or torque converters does not fix it and owners can spend thousands chasing the wrong part.

Common Symptoms

  • Engine stalls when coming to a stop (manual transmission)
  • Clutch chatter or shudder on engagement
  • Hard or notchy shift into 1st gear or reverse
  • Vibration on launch (automatic transmission)
  • Clunk or knocking noise from the engine
  • Crankshaft endplay outside 0.0015-0.0086 inch

How to Fix

Before condemning the clutch or transmission, measure crankshaft endplay with a dial indicator against the specification of 0.0015-0.0086 inch. If it is out of range, remove the oil pan and inspect the thrust bearing. GM explicitly states in 19-NA-217 that it is not necessary to replace the engine assembly - the repair is targeted inspection and replacement of the damaged internals, typically the crankshaft, connecting rods and main bearings. On dry-sump cars (Z51, Grand Sport, Z06) the oil tank and oil cooler should also be replaced because bearing debris circulates into them and will destroy the new bearings if left in place. Verify endplay again after reassembly.

Typical repair cost:$3,500 - $9,000

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2017 Chevrolet Corvette, the C7 uses a saddle-style twin fuel tank. On 2014-2017 cars, cracks develop on the top surface of the left-hand fuel tank's primary fuel pump module flange, allowing liquid fuel and vapor to escape. Owners report a strong fuel smell - most obvious after parking a full car in a closed garage - and in worse cases fuel dripping onto the ground beneath the left rear of the car. The flange sits on top of the tank, so the leak is invisible without lifting the car, and the smell is often blamed on the evaporative system or the filler neck. Because the leak point is above the fuel level, the odor and drip typically appear when the tank is more than half full, and a check engine light may set when the level drops below half. This is a fire risk and GM established Special Coverage 17469 with unusually long terms - 10 years or 120,000 miles from the in-service date, regardless of ownership.

This issue also affects: Chevrolet HHR, Buick Encore GX, Chevrolet Malibu

Common Symptoms

  • Strong fuel odor, especially with a full tank or after parking in a garage
  • Fuel droplets or wet spot under the left rear of the car
  • Check engine light when the tank drops below half
  • Fuel level or gauge irregularities

How to Fix

Verify the source before spending money: lift the car and inspect the top of the left-hand fuel tank at the primary fuel pump module flange for wet fuel or staining. Under GM Special Coverage 17469 (reference N172131680) the dealer replaces the complete primary fuel pump module at no charge for 10 years / 120,000 miles from the original in-service date, regardless of ownership, on repair orders dated April 18, 2018 or later. Owners who already paid out of pocket can request reimbursement. Check coverage by VIN through Chevrolet customer assistance or my.chevrolet.com. Outside coverage this is an expensive job because the fuel tank must be dropped, which on the C7 usually means dropping or displacing the rear transaxle assembly - budget accordingly, and do not defer it, as a fuel leak near a hot exhaust is a fire hazard.

Typical repair cost:$0 - $5,300

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2019 Chevrolet Corvette, the C7 Corvette with the 7-speed manual or 8-speed automatic can develop an annoying driveline vibration/shudder at low speeds, particularly during gentle acceleration from a stop. The 7-speed manual uses a dual-mass flywheel that can develop chatter. The 8-speed automatic (8L90) shares the torque converter shudder issue with GM trucks. The transaxle-mounted differential and half-shafts can also contribute to vibrations.

This issue also affects: Buick Encore GX, Buick Regal, Cadillac DeVille

Common Symptoms

  • Shudder during gentle acceleration from stop
  • Vibration at 20-40 mph under light throttle (8-speed)
  • Clutch chatter in 1st gear (7-speed manual)
  • Vibration through floor at highway cruise
  • Clunk on tip-in/tip-out throttle

How to Fix

For 8-speed: same transmission fluid exchange with Mobil 1 LV ATF HP as other 8L90 vehicles. For 7-speed manual: dual-mass flywheel inspection/replacement, or conversion to single-mass flywheel with aftermarket clutch. Half-shaft inspection for worn CV joints. Some vibration at low speed is inherent to the C7 design.

Typical repair cost:$200 - $2,500

Research This Issue

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Community Reported
Medium Confidence
NHTSA Recalls8 recalls

STEERING:ELECTRIC POWER ASSIST SYSTEM

General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, 2017-2018 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles. The electric power steering (EPS) assist may fail.

Campaign #25V17500020/03/2025

AIR BAGS:FRONTAL

General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

Campaign #17V43700010/07/2017

AIR BAGS:FRONTAL

General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

Campaign #16V65100008/09/2016

AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE

General Motors LLC (GM) is recalling certain 2019 Chevrolet Corvette ZR1 vehicles. Hard braking or acceleration may cause the sensing diagnostic module (SDM) to enter a fault state. As a result, the SDM will not provide crash sensing or deploy the necessary air bags in the event of a crash.

Campaign #18V36000031/05/2018

AIR BAGS

General Motors LLC (GM) is recalling certain model year 2015 Chevrolet Corvette vehicles manufactured August 20, 2014, to August 27, 2014. In the event of a driver frontal air bag deployment, the driver air bag module back plate may fracture, allowing the driver air bag to separate from the steering wheel.

Campaign #14V57000019/09/2014

+ 3 more recalls. Check all on NHTSA.gov

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Frequently Asked Questions

What are the most common Chevrolet Corvette problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2014 Chevrolet Corvette has 4 documented issues. The most frequently reported are: Left Fuel Tank Pump Module Flange Cracks and Leaks Fuel, Active Fuel Management Lifter Collapse Causes Engine Tick and P0300 Misfire, Crankshaft Thrust Bearing Wear Causes Stalling, Clutch Chatter and Launch Vibration. Of these, 3 are rated critical and should be addressed promptly.

Is the Chevrolet Corvette reliable?

The 2014 Chevrolet Corvette has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 3 issues are rated critical: Left Fuel Tank Pump Module Flange Cracks and Leaks Fuel and Active Fuel Management Lifter Collapse Causes Engine Tick and P0300 Misfire and Crankshaft Thrust Bearing Wear Causes Stalling, Clutch Chatter and Launch Vibration. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Chevrolet Corvette problems?

Repair costs for known Chevrolet Corvette issues range from $0 to $9,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Left Fuel Tank Pump Module Flange Cracks and Leaks Fuel, typically costs $0-$5,300 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2014-2017 Chevrolet Corvette Left Fuel Tank Pump Module Flange Cracks and Leaks Fuel?

The C7 uses a saddle-style twin fuel tank. On 2014-2017 cars, cracks develop on the top surface of the left-hand fuel tank's primary fuel pump module flange, allowing liquid fuel and vapor to escape. Owners report a strong fuel smell - most obvious after parking a full car in a c… Repairs typically run $0-$5,300. Severity: high.

What is the 2014-2019 Chevrolet Corvette Active Fuel Management Lifter Collapse Causes Engine Tick and P0300 Misfire?

The Active Fuel Management (cylinder deactivation) lifters in the 6.2L LT1 and LT4 mechanically collapse or stick in their bores, producing a persistent top-end tick and a misfire that sets P0300. GM's own bulletin identifies four failure paths: a mechanically collapsed or stuck… Repairs typically run $2,500-$7,500. Severity: high.

What is the 2014-2019 Chevrolet Corvette Crankshaft Thrust Bearing Wear Causes Stalling, Clutch Chatter and Launch Vibration?

A damaged crankshaft thrust bearing allows excessive crankshaft endplay on both the LT1 and LT4. The symptom set differs by transmission, which is why it is often misdiagnosed. On manual cars owners report engine stalling, clutch chatter, and hard shifting into first gear or reve… Repairs typically run $3,500-$9,000. Severity: high.

What is the 2014-2019 Chevrolet Corvette Driveline Vibration at Low Speed - C7?

The C7 Corvette with the 7-speed manual or 8-speed automatic can develop an annoying driveline vibration/shudder at low speeds, particularly during gentle acceleration from a stop. The 7-speed manual uses a dual-mass flywheel that can develop chatter. The 8-speed automatic (8L90)… Repairs typically run $200-$2,500. Severity: low.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.