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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