Chevrolet confident in L3B four-cylinder, adds 100K-mile powertrain warranty
As we reported earlier this year, Chevrolet is making some small but welcome changes to the 2024 Silverado. The 3.0-liter Duramax inline-six, the only diesel engine offered in the 1/2-ton market, saw its output increase from 277 hp and 460 lb-ft of torque to 305 hp and 495 lb-ft of torque. (That exceeds the power output of the 6.6-liter Duramax V-8 when it launched back in 2001!) The newest change to the 2024 Silverado lineup, however, is the addition of a five-year, 100,000-mile powertrain warranty for the 2.7-liter L3B TurboMax gasoline inline-four engine.
We’ve written about the mighty L3B four-cylinder in detail and have experienced it in both the Silverado and Colorado. In both applications, its broad torque curve pairs well with GM’s redesigned eight-speed automatic transmission to deliver seamless power, and it features a lot of tough parts just like you’d find in a diesel. It’s the standard engine on most of the Silverado lineup, starting with the WT and continuing on to the Custom, Custom Trail Boss, LT, LT Trail Boss, and RST.
We asked Chevrolet if there was anything new for the 2024 engine that prompted the warranty upgrade, and it’s the same L3B with the same tune that’s been in service since 2022. Sean Szymkowski, Senior Manager of Chevrolet Trucks Communications, told us, “We’re proud this warranty goes beyond competitors’ offerings in the light-duty, full-size pickup segment for a gasoline-powered engine.”
Having two powertrain options with 100,000-mile warranties could give Chevrolet a leg up on its competition, although it’s already been doing quite well on the sales front against Ford and Ram. This same powertrain combination in the Chevrolet Colorado will maintain the five-year, 60,000-mile warranty that also previously applied to the Silverado’s L3B, matching the powertrain warranty of its chief competitor, Toyota Tacoma. The big difference is that with Colorado, a turbo-four is the only powertrain available.
Our thinking? Chevrolet might want its tough four-cylinder to be perceived as more than just a “base engine” when it’s on the showroom alongside a 355-hp 5.3-liter V-8 and 420-hp 6.2-liter V-8.