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Chevrolet Corvette C8 faults

3 faults documented by at least two sources, listed by version then by mileage at onset when known.

Buy with care
Reliability
3.0/5

3 known faults

Stingray 6.2 V8 coupé ou cabriolet

  1. Tremec TR-9080 dual-clutch gearbox: leaks and faults

    Severity 2/3 · Costly

    At the end of 2021 GM opened an investigation into the 8-speed dual-clutch gearbox of 2020-2022 Corvettes: leaks (seals), error messages asking the driver to shift to P, and a discharged battery in some cases. GM issued several technical bulletins, including a software update. Most reports come from owner forums, so the real frequency is uncertain.

    Versions
    Stingray 6.2 V8 coupé ou cabriolet, Z06 5.5 V8 LT6 coupé ou cabriolet
    Onset
    not documented
    Repair
    not documented

  2. Loose gearbox mountings (2023-2024 Corvettes)

    Severity 2/3 · Costly

    A GM bulletin (N232427051) concerns certain 2023-2024 Corvettes whose gearbox mountings were incorrectly tightened: dealers inspect and replace the gearbox free of charge, regardless of mileage, until 31 May 2026 (date now passed: check with a dealer for a given vehicle).

    Versions
    Stingray 6.2 V8 coupé ou cabriolet, Z06 5.5 V8 LT6 coupé ou cabriolet, E-Ray hybride 6.2 V8 et moteur électrique
    Onset
    not documented
    Repair
    not documented

  3. Defective valve springs (engines built in 2020)

    Severity 3/3 · Serious

    A batch of defective valve springs affected GM V8s built between 1 June and 15 September 2020, a window later extended to 7 October 2020 for the 6.2 L. Symptoms: rough running, a knocking noise, engine warning light, possible stalling; one case saw a valve fall into a cylinder. GM issued a repair bulletin.

    Versions
    Stingray 6.2 V8 coupé ou cabriolet
    Onset
    not documented
    Repair
    not documented

Z06 5.5 V8 LT6 coupé ou cabriolet

  1. Tremec TR-9080 dual-clutch gearbox: leaks and faults

    Severity 2/3 · Costly

    At the end of 2021 GM opened an investigation into the 8-speed dual-clutch gearbox of 2020-2022 Corvettes: leaks (seals), error messages asking the driver to shift to P, and a discharged battery in some cases. GM issued several technical bulletins, including a software update. Most reports come from owner forums, so the real frequency is uncertain.

    Versions
    Stingray 6.2 V8 coupé ou cabriolet, Z06 5.5 V8 LT6 coupé ou cabriolet
    Onset
    not documented
    Repair
    not documented

  2. Loose gearbox mountings (2023-2024 Corvettes)

    Severity 2/3 · Costly

    A GM bulletin (N232427051) concerns certain 2023-2024 Corvettes whose gearbox mountings were incorrectly tightened: dealers inspect and replace the gearbox free of charge, regardless of mileage, until 31 May 2026 (date now passed: check with a dealer for a given vehicle).

    Versions
    Stingray 6.2 V8 coupé ou cabriolet, Z06 5.5 V8 LT6 coupé ou cabriolet, E-Ray hybride 6.2 V8 et moteur électrique
    Onset
    not documented
    Repair
    not documented

E-Ray hybride 6.2 V8 et moteur électrique

  1. Loose gearbox mountings (2023-2024 Corvettes)

    Severity 2/3 · Costly

    A GM bulletin (N232427051) concerns certain 2023-2024 Corvettes whose gearbox mountings were incorrectly tightened: dealers inspect and replace the gearbox free of charge, regardless of mileage, until 31 May 2026 (date now passed: check with a dealer for a given vehicle).

    Versions
    Stingray 6.2 V8 coupé ou cabriolet, Z06 5.5 V8 LT6 coupé ou cabriolet, E-Ray hybride 6.2 V8 et moteur électrique
    Onset
    not documented
    Repair
    not documented

Price and diagnose repairs

Read fault codes

An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.

Parts and maintenance

Compare prices of parts for the Chevrolet Corvette C8 (timing, brakes, filters) to estimate the repairs to plan for.

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