General Motors South Carolina Lemon Law Cases

General Motors is heavily represented in the SC market — Silverado / Tahoe / Suburban / Yukon in the pickup/SUV space, Corvette in the performance niche, Cadillac LYRIQ (TN-built) in the luxury EV niche. GM has no SC plant; GM Spring Hill TN is the nearest plant — see Tennessee GM coverage for home-state TN perspective on Cadillac LYRIQ, XT5/XT6, and GMC Acadia.

GM in the SC market

• No SC OEM plant.
• Nearest plants: GM Spring Hill TN, GM Wentzville MO, GM Fort Wayne IN.
• Strong dealer network — Chevrolet, GMC, Cadillac, Buick brands.
• Pickup leadership — Silverado top-selling vehicle in rural SC.
• Tahoe / Suburban strong in suburban Columbia, Charleston, Greenville.

Common GM defect categories

8L90 / 8L45 8-speed automatic — “torque-converter shudder”

• Shudder, vibration, “rumble” sensation during torque-converter lock-up.
• Most common between 35-65 mph during light-throttle cruise.

Affected models:

• Chevy Silverado 1500 (2015+).
• Chevy Tahoe / Suburban (2015+).
• GMC Sierra 1500 (2015+).
• GMC Yukon / Yukon XL / Denali (2015+).
• Cadillac CT6, CTS, CT5 (some).
• Chevy Camaro (8-speed equipped).

Class action / TSB history:

• Multiple GM TSBs.
• Class action settlement involving the 8L90 shudder pattern.

L87 6.2L V8 — connecting rod failures

• Catastrophic engine failure — typically connecting rod through the block.
• Often little or no warning.

Affected models:

• Cadillac Escalade (2021-2024).
• Chevy Tahoe / Suburban (2021-2024).
• Chevy Silverado 1500 (2021-2024).
• GMC Yukon / Sierra (2021-2024).

GM response:

• NHTSA-supervised recall for affected production windows.
• Engine replacement programs.

Duramax 6.6L diesel (heavy-duty)

• DEF system crystallization, regen issues.
• GVWR often exceeds 10,000 lbs — SC Lemon Law may not apply.

GM Infotainment 3 (and 4)

• Touchscreen lag and freezes.
• CarPlay / Android Auto disconnects.
• Backup-camera failures — FMVSS 111 issue.
• Super Cruise issues (premium trims).

Corvette (C8 — mid-engine)

• Dual-clutch transmission issues.
• Build quality — early production teething.
• Infotainment.

Cadillac LYRIQ (EV — GM Spring Hill TN)

• See Tennessee GM coverage for TN home-state perspective.

Chevy Bolt / Bolt EUV (discontinued)

• Battery recall — large NHTSA-supervised recall.

Hummer EV (GMC)

• Early-production issues.
• Charging system.

Cadillac Escalade (and IQ EV variant)

• 8L90 shudder.
• L87 V8 failures.
• Air suspension issues.

Buick (Encore, Enclave, Envision)

• Transmission issues.
• Infotainment.

A/C in SC heat

• AC compressor failures common across GM vehicles in SC summer heat.

Recall and TSB history

• NHTSA recall search by VIN.
• GM service portal for TSBs.

Documented patterns include:

• 8L90 shudder TSBs and class action.
• L87 V8 recall (2021-2024 production).
• Chevy Bolt battery recall.
• Various infotainment and software updates.
• Super Cruise software updates.

Procedural considerations

• BBB Auto Line is GM’s certified IDS for most divisions — mandatory under § 56-28-60.
• Written notice to Chevrolet / GMC / Cadillac / Buick Customer Assistance triggers customer-relations engagement.

SCUTPA exposure

GM cases have SCUTPA exposure for:

• 8L90 “fixed” representations — when shudder persists after remediation.
• L87 V8 reliability representations — when catastrophic failures occur within warranty.
• Recall-effectiveness representations.
• Super Cruise feature claims vs. actual.
• LYRIQ / Hummer EV range claims vs. actual.

Bottom line

GM cases in SC span the rural pickup market (Silverado / Sierra / 2500/3500 HD), suburban SUV market (Tahoe / Suburban / Yukon / Escalade), and growing EV market (LYRIQ, Hummer EV, discontinued Bolt). The 8L90 shudder and L87 V8 failures are flagship defect patterns with strong SCUTPA public-interest pleading basis.

Related

Article

Audi / Volkswagen / Volvo / Polestar South Carolina Lemon Law Cases (Volvo Ridgeville Home-State)

Volvo Cars Charleston (Ridgeville) is SC's second home-state OEM — produces S60, Polestar 3, Volvo EX90. Plus Audi / VW from Chattanooga TN (Atlas, ID.4) and imports.

Read → Article

BMW South Carolina Lemon Law Cases (Home-State Defendant — BMW MFG Spartanburg, Largest BMW Plant in the World)

BMW Manufacturing Co. (BMW MFG) Spartanburg is the LARGEST BMW plant in the world by production volume, producing X3, X4, X5, X6, X7, XM, iX. Primary home-state defendant for SC lemon-law cases.

Read → Article

Ford South Carolina Lemon Law Cases

Ford in the SC market — F-150 death-wobble (rural SC paradigm), Mustang Mach-E, EcoBoost LSPI, PowerShift transmission legacy. Common defect patterns and case strategy.

Read → Article

Honda South Carolina Lemon Law Cases

Honda in the SC market — Pilot, Passport, Odyssey, Ridgeline, MDX built at Honda Manufacturing of Alabama (HMA) Lincoln. Common AL-adjacent OEM exposure. 9-speed ZF, V6 oil consumption.

Read → Article

Hyundai South Carolina Lemon Law Cases

Hyundai in the SC market — Sonata, Tucson, Santa Fe, Santa Cruz built at HMMA Montgomery AL. Theta II engine exposure. Common AL-adjacent OEM exposure for SC consumers.

Read → Article

Kia South Carolina Lemon Law Cases

Kia in the SC market — Kia West Point GA (90 miles from SC border) builds Telluride, Sorento, Sportage. Theta II engine exposure (shared with Hyundai). Common SC market.

Read →