Next-Gen Chevy Silverado HD and GMC Sierra HD Release Date Announced

General Motors is set to refresh its full-size pickup range over the next few years. Filmogaz.com has tracked GM’s plans since 2024 and now has new timeline details for the heavy-duty models.

Schedule and production

Sources familiar with the matter tell Filmogaz.com that the next-generation Chevy Silverado HD and GMC Sierra HD are slated as 2029 model year vehicles. Planned production is expected to start in the fourth quarter of 2028. This will be the first full redesign of the heavy-duty Silverado and Sierra since their 2020 model year launch.

Platform and structure

The HD pickups will ride on an updated version of GM’s T1 platform, called T1-2. The heavy-duty variants will use a reinforced frame and stronger chassis than the light-duty trucks. Engineers aim to raise capability and durability while improving overall refinement.

Electronics and computing

GM will move the HD trucks to a next-generation centralized computing platform. That system replaces the current Global B electrical architecture. It is designed for faster processing and to enable more advanced features aligned with GM’s software-defined strategy.

Interior, exterior and features

Expect a thoroughly redesigned cabin with upgraded materials and expanded comfort features. New infotainment screens and improved connectivity are part of the plan. Towing and hauling technology will receive specific upgrades to aid owners in real-world tasks.

Exterior designs will be refreshed for a more modern and expressive appearance. Both gasoline and diesel powertrains are expected to return as engine choices. The changes aim to keep the trucks competitive in the heavy-duty segment.

What buyers should know

Those watching the Next-Gen Chevy Silverado HD should note the 2029 model year arrival and late-2028 production start. For buyers tracking timelines, the GMC Sierra HD release date announced to be 2029 gives a clearer buying window. Filmogaz.com will continue to follow developments and report further technical and spec updates.