I’ve spent a lot of time lately digging into GM’s next generation of truck engines. At the company’s powertrain event in Michigan, GM President Mark Reuss stepped up to explain the bigger picture: why Chevrolet and GMC are investing in new gasoline and diesel engines while GM continues developing electric vehicles. His remarks are worth hearing alongside the technical questions I put to the engineers.
This is GM making its case for its own trucks, and I think that distinction matters. Reuss is selling a strategy, not delivering an independent reliability verdict. Still, when the person serving as president of General Motors lays out where the company believes truck buyers are headed, there’s plenty for Silverado and Sierra owners to consider.
The small-block V8 still matters to GM
Reuss opened with the history of the small-block V8 and its connection to Flint. He talked about its reach beyond factory vehicles, including performance and aftermarket applications, before turning to the engines coming in the next-generation Chevrolet Silverado and GMC Sierra. The message was that GM sees the new engines as another chapter in a long-running business, rather than a farewell to gasoline power.
For me, that history provides context, but the important part is what comes next. Truck owners are buying an engine to tow, haul, commute and live with for years. A familiar engine family gives GM a story to tell; the new hardware still has to prove itself in those everyday jobs. That’s why I wanted to hear from both Reuss and the engineers responsible for the details.
Gas, diesel and EVs are all part of the plan
The most interesting part of the speech was the way Reuss described customer choice. He said different buyers need different combinations of capability, range, affordability, towing confidence and convenience. GM’s approach, as he presented it, is to keep developing internal-combustion powertrains while investing in EV platforms, batteries, charging and software.
Reuss also said GM still views EVs as the industry’s eventual direction. At the same time, he emphasized the millions of truck customers who need the capabilities delivered by gasoline and diesel pickups today. I hear that as an acknowledgment that truck use varies enormously. A buyer who regularly pulls a trailer long distances is evaluating a very different set of tradeoffs from someone using a pickup mainly around town.
Two new V8s sit within a broader engine lineup
Reuss described four powertrain choices for the 2027 Silverado and Sierra light-duty pickups, paired with a 10-speed automatic: the 2.7-liter TurboMax, 3.0-liter Duramax diesel, and new 5.7-liter and 6.6-liter Gen 6 small-block V8s. He framed the lineup around different jobs and priorities, with the two new V8s developed for real truck use.
He also stressed that an engine doesn’t work alone. Transmission behavior, controls and the rest of the truck have to deliver usable capability together. That’s a point I agree with: a peak output number is only part of the story. My separate discussion with GM’s engine team gets into the questions truck owners have been asking about the new V8s, including the missing dipstick and durability concerns. Those answers deserve attention alongside the executive overview.
GM’s truck leadership pitch needs to deliver for owners
Reuss closed by connecting GM’s engine investment with Chevrolet and GMC’s different customer groups and the company’s ambitions in the truck market. He also discussed U.S. manufacturing and validation work. Those are GM’s statements about its strategy and preparation; they aren’t a substitute for long-term owner experience with trucks that haven’t reached customers yet.
My takeaway is that GM wants buyers to see choice as a strength: multiple engines, two truck brands and continued investment in both combustion and electric propulsion. Whether that becomes a better ownership experience is the question that matters to me. Watch Reuss’s full remarks in the video player and let me know what you think. Does this direction match what you want from your next truck?
