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

General Motors (Chevrolet, GMC, Cadillac, Buick) is well-represented in Massachusetts. GM cases are pursued under § 7N½ (Massachusetts Lemon Law) and Chapter 93A.

Common GM defect patterns

• 8-speed transmission shudder — Silverado, Sierra, Camaro (well-documented TSB pattern).
• L87 / LT4 V8 lifter failures.
• Bolt EV battery recall pattern (LG-cell fires).
• 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.
• Cadillac CT5 Blackwing transmission issues.
• Equinox / Terrain 1.5L turbo issues.

GM TSB / recall overlay

Heavy TSB pattern:

• 8-speed shudder TSBs (multiple model years).
• L87 lifter TSBs.
• Bolt EV battery replacement recalls.
• Duramax emissions service campaigns.
• Air suspension TSBs.

Chapter 93A willfulness fit

GM cases support c. 93A willfulness particularly with:

• Bolt EV battery class-action history.
• 8-speed shudder multi-state class actions.
• Duramax emissions pattern.

Heavy-duty pickup limitation

Massachusetts’s 10,000-lb GVWR cap typically excludes Silverado 2500/3500.

Bottom line

GM cases — particularly 8-speed shudder, Bolt EV battery, and Duramax emissions cases — are well-positioned for Massachusetts Lemon Law and Chapter 93A. Class-action history provides strong c. 93A willfulness evidence.

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