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Wisconsin · Article Updated May 24, 2026

General Motors (Chevrolet/GMC/Cadillac/Buick) Cases Under Wisconsin Lemon Law

GM cases in Wisconsin — Silverado, Sierra, Tahoe, Suburban, Equinox, Bolt, Hummer EV, and emerging Ultium EV patterns.

General Motors (Chevrolet, GMC, Cadillac, Buick) is well-represented in Wisconsin — GM has a strong Midwestern presence. GM cases are pursued under Wis. Stat. § 218.0171.

Common GM defect patterns

  • 8-speed transmission shudder — Silverado, Sierra, Camaro (TSB pattern).
  • L87 / LT4 V8 lifter failures.
  • Bolt EV battery recall pattern.
  • Hummer EV early-build issues.
  • GMC Sierra Denali Ultimate infotainment crashes.
  • Cadillac Lyriq Ultium drive unit issues.
  • 6.6L Duramax diesel emissions failures.
  • Suburban / Yukon air suspension failures.

GM TSB / recall overlay

Heavy TSB pattern.

Heavy-duty pickup coverage

Wisconsin imposes no GVWR cap, so the Silverado 2500 / 3500 is covered — vehicles over 10,000 lbs are simply “heavy-duty,” which only lengthens the manufacturer’s refund/replacement timeline.

Bottom line

GM cases — particularly 8-speed shudder, Bolt EV battery, and Duramax emissions cases — are well-positioned for Wisconsin Lemon Law with § 218.0171(7) doubling.

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