The C7 Corvette with the LT1 is generally solid, but the 2019 model year saw a spike in catastrophic engine failures due to valve spring defects, plus the 8-speed automatic has cooling and mount issues that plague high-performance use.
LT1 Valve Spring Failure Leading to Catastrophic Engine Damage
Occasional · high severity
Typical onset: 5,000-40,000 mi
Symptoms: Sudden loss of power or rough running, Metallic rattling or ticking from engine bay, Check engine light with misfire codes (P0300-P0308), In worst cases: complete engine seizure or rod through block
Fix: GM issued TSB for defective valve springs on 2014-2019 LT1 engines. When springs break, they drop into cylinder causing piston/ring/bore damage. Requires full engine rebuild or short block replacement. 25-35 hours labor depending on extent of damage. Some covered under powertrain warranty extension, but not all 2019s qualify.
Estimated cost: $8,000-15,000
8L90 Transmission Oil Cooler Line Leaks and Cooler Failure
Common · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: Transmission fluid puddles under car (usually passenger side), Burnt transmission fluid smell, Harsh or delayed shifts when fluid gets low, Transmission overheat warnings on track or spirited driving
Fix: Hard lines from trans to auxiliary cooler crack at fittings or cooler itself develops pinhole leaks. Cooling capacity also marginal for Z51 track use. Replace cooler, lines, and flush system. 4-6 hours labor. Upgraded aftermarket coolers recommended for track cars.
Estimated cost: $800-1,400
Transmission Mount Collapse (8-Speed Auto)
Common · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: Clunk or thud on acceleration or deceleration, Vibration felt through shifter or center console, Visible transmission sag when inspecting from underneath, Worse with hard launches or aggressive driving
Fix: The rear transmission mount (torque arm mount) is undersized and fails on automatics, especially with performance use. Rubber separates from metal housing. Replace with OEM or upgraded polyurethane mount. 2-3 hours labor including exhaust removal for access.
Estimated cost: $400-700
Fuel Filter Clogging from Tank Liner Debris
Occasional · medium severity
Typical onset: 20,000-60,000 mi
Symptoms: Hesitation or stumble under hard acceleration, Loss of power above 5,000 RPM, Check engine light with fuel trim or lean codes, More common in cars that sat on dealer lots for extended periods
Fix: In-tank fuel filter clogs with debris from deteriorating tank liner material, a known issue on some 2019s. Requires dropping fuel tank, replacing filter and inspecting tank liner condition. If liner is shedding badly, tank replacement needed. 4-6 hours for filter, 8-10 if tank replaced.
Symptoms: Rough idle when cold, Slight hesitation or misfire at low RPM, Gradual loss of throttle response, Check engine light with P0300 series codes
Fix: Direct injection means no fuel washing over intake valves, allowing carbon deposits to build up. Requires walnut blasting or chemical cleaning of valves with intake manifold removed. 6-8 hours labor. Not urgent but affects driveability over time.
Estimated cost: $800-1,200
Airbag Control Module Software Recall (21V-541)
Common · high severity
Symptoms: Airbag warning light illuminated, No symptoms until crash — airbags may not deploy properly, Affects all 2019 Corvettes built before a certain date
Fix: NHTSA recall for airbag control module software that may prevent proper deployment. Dealer reflash takes 1 hour, covered under recall. Critical safety issue — check if your VIN was remedied.
Estimated cost: $0 (recall repair)
Owner tips
Check service history for valve spring TSB 19-NA-206 — if not done, negotiate price or budget for future failure
Inspect transmission cooler lines and mount before purchase, especially on automatics with track use
Change transmission fluid every 30k if driven hard; factory 'lifetime' fluid is optimistic
Use Top Tier fuel exclusively to minimize carbon buildup on direct injection engines
Verify airbag recall 21V-541 was completed; check NHTSA database with VIN
Buy a manual with documented valve spring fix or one built late enough to avoid the defect — automatics need extra scrutiny on cooler and mount; otherwise a solid performance platform if you can stomach engine failure risk on early LT1s.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Battery located in rear cargo area behind driver side panel; AGM required for performance electronics
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Every control module on the 2018-2019 Chevrolet Corvette — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Engine compartment, behind headlight assemblies (left and right)
🔧 Autel or GM SPS2
⚠️ Separate modules for each headlight; adaptive lighting calibration if equipped
Park Assist Control Module (PACM)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Rear cargo area, center
🔧 Autel or GM SPS2
⚠️ Ultrasonic sensor calibration required
Rear Vision Camera Module (RVCM)0.5 hr R&Rno coding
📍 Rear fascia, integrated with camera
⚠️ Plug-and-play; camera alignment may be needed
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE · 18V360000
2018-05-31
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.
Consequence: In the event of a crash, if the air bags do not deploy as designed, the occupants have an increased risk of injury.
Remedy: GM will notify owners, and dealers will reprogram the SDM with updated software, free of charge. The recall began on June 29, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 18195.
Performance
Horsepower
460hp
Torque
465lb-ft
0–60 mph
3.7sec
Quarter mile
11.9sec
Top speed
194mph
Fuel economy (EPA)
City
15mpg
Highway
25mpg
Combined
18mpg
Fuel
Premium Gasoline
Capability & size
Curb weight
3,366lb
EPA class
Two Seaters
Wiper blades
C7 generation (2014-2019). Coupe and convertible both use same wiper configuration. No rear wiper on sports car.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2019 Chevrolet Corvette 6.2L V8 LT1 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.