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

General Motors (Chevrolet, GMC, Cadillac, Buick) is well-represented in Arizona. GM cases are pursued under A.R.S. § 44-1263 and Magnuson-Moss.

Common GM defect patterns

8-speed transmission shudder — Silverado, Sierra, Camaro (TSB pattern).
L87 / LT4 V8 lifter failures.
Bolt EV battery recall pattern (LG-cell fires) — particularly relevant in Arizona heat.
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.
L87 lifter TSBs.
Bolt EV battery replacement recalls (Arizona-significant: thermal runaway risk in heat).
Duramax emissions service campaigns.
Air suspension TSBs.

Heavy-duty pickup limitation

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

Bottom line

GM cases — particularly 8-speed shudder, Bolt EV battery (heat-stress relevant), and Duramax emissions cases — are well-positioned for Arizona Lemon Law. Class-action history supports CFA punitive pleading within 1-year SOL.

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