GM teases massive Silverado
GM surprised with the 2028 Chevy Silverado Super Heavy Ultra Duty — a dramatic step into the ultra‑heavy pickup market and a clear ‘bigger is better’ play for commercial and enthusiast buyers. The debut signals GM will push both capability and scale in the next truck cycle. (gmauthority.com).
Chevrolet’s current Silverado HD lineup uses a 6.6‑liter Duramax turbo‑diesel rated at 470 horsepower and 975 lb‑ft of torque, with Chevrolet advertising a maximum available towing capacity of 36,000 pounds for 2026 HD diesel models (chevrolet.com). Industry trackers and GM‑focused outlets say the 2028 Silverado HD is expected to be a new-generation heavy‑duty lineup riding on an updated T1‑2 architecture — effectively the fifth generation of Silverado HD products — which frames where GM can place any ultra‑heavy derivatives within its model cycle (gmauthority.com). Spy video and reporting have documented GM testing heavy‑duty Silverado and Sierra prototypes that enthusiasts and outlets identify as candidates for a larger diesel, with GM Authority flagging an 8.3‑liter “MegaMax” Duramax in July 2025 and TFL Truck reporting claims the next HD diesel could push north of 600 hp in some configurations ( ). Chevrolet’s commercial Silverado chassis‑cab lineup already spans medium‑duty classes with the 4500 through 6500 models carrying GVWR ranges from about 14,001 up to 23,500 pounds, demonstrating GM’s existing production footprint across heavier commercial classes (chevrolet.com). Reporting on GM’s product timetable and plant work shows the company planned next‑generation Silverado and Sierra 1500 launches in 2026 as 2027 model‑year vehicles and has been coordinating production investments (including work at Fort Wayne) ahead of its broader truck refreshes, context that frames when ultra‑heavy variants could enter production lines ( ). Enthusiast and trade outlets have already started mapping likely trim and specialty directions for the 2028 Silverado cycle, including leaked reporting about a factory‑lifted High Country variant for 2028, indicating GM and third‑party suppliers are hedging for both commercial and lifestyle demand in the next truck refresh (gm-trucks.com).
