Ontario's automotive market is transforming with unprecedented opportunities for GM dealerships. With 88.3% of sales now trucks/SUVs and Buick attracting 69% new buyers aged 18-35, strategic positioning is crucial. From tariff advantages with Oshawa-built Silverados to ZEV market navigation, this comprehensive analysis reveals how Chevrolet, Buick & GMC dealers can maximize growth in 2025-2026's evolving landscape.