Up to $4,500 cash back or up to $2,000 cash and 0.0% financing for 72 months (varies by trim level).  The full-size Chevrolet Silverado 1500 pickup truck is the second best-selling vehicle in the U.S., and a redesigned model coming for 2019 adds a sense of urgency to the situation. Rebates are being selectively applied to slower-selling trim levels to keep dealer inventories from backing up, but all versions come with at least $1,000 cash back this month.