Lifter collapse is another issue 2022 Chevrolet Silverado 1500 Regular Cab Short Box | GMĪs with the GM 6.2-liter engine, there is a rise in incidents of lifters collapsing. With today’s gas prices, that amounts to over $12 on every fillup. That’s two miles-per-gallon lower than advertised. Those owners that are having this issue have seen an average fuel economy of about 19.5 miles per gallon. Now there is talk about the same for the 2.7-liter Turbo engine. A class-action lawsuit against GM over lower fuel economy than advertised over its 5.3-liter Vortec engine is in the works. Quite a few 2.7 Turbo owners are complaining about poor fuel economy. Reports of Silverado’s poor fuel economy 2019 Chevrolet Silverado 2.7L Turbo | GM That’s because less air is able to enter the charge because there is less space. This includes less performance, rough idle, and misfiring. So guess what? Carbon buildup is becoming a problem as these engines accumulate miles.Ĭarbon builds up over time, so engines hitting over 80,000 miles are showing up with issues. All of the manufacturers recognize this issue, but GM chose to omit port injection for the 2.7 Turbo. Most direct injection applications also have port injection, which counters this problem.
That means the natural flushing of carbon that builds up on intake valves and cylinders is no longer possible with direct injection. The fuel charge entering the cylinders is under much lower pressure than in past injection systems. One issue that comes up with direct injection is carbon buildup. Carbon buildup in the Silverado 2.7-liter four-cylinder? 2022 Chevy Silverado 1500 | Chevrolet Along with other changes, this allowed GM to increase the torque rating to 420 lb-ft. But Consumer Reports says that already, four percent of 2.7-liter engines have experienced catastrophic failures. In 2020, an updated 元B appeared, which addressed some issues. While the Silverado 2.7 Turbo is still fairly new as powerplants go, there have been some issues that are becoming more common. That also means there is more to go wrong, unfortunately. So there are the same components as 10 or 20 years ago, but now they’re doing more individual tasks. Plus, all of this is also tied into continuously variable valve timing. In this mode, cylinders 2 and 3 are deactivated. And this is combined with Active Fuel Management or AFM. This controls various lifter heights to save on fuel, depending on conditions. This engine also uses what GM calls “Sliding Cam Valve Lift System” or SCS. What advanced fuel management systems are in the Silverado 2.7-liter? 2019 Chevrolet Silverado 2.7L Turbo | GM The engine has a cast aluminum engine block with iron liners. Built-in dual balance shafts help to override drivetrain vibrations. With a long stroke increasing torque, that also can create certain vibrations. So far, however, there have been no recalls. But problems have surfaced, which GM has addressed in various Technical Service Bulletins. Stop-start cylinder deactivation, direct injection, variable valve timing, thermal management, and continuously variable oil pump are just some of the Silverado features of the 2.7 Turbo to improve fuel economy and performance.Īvailable for full-size trucks starting in 2019, it continues into the current model year with a pretty good record. It seems this tough engine has everything incorporated into it. The GM 2.7-liter 元B Turbo four-cylinder engine for Chevy Silverado and GMC Sierra pickups is meant to change minds about power and torque in a small package.
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