GM 2.7L L3B Turbo Engine: Specs, Problems, and Reliability

GM 2.7L L3B Turbo Engine: Specs, Problems, And Reliability : GM 2.7L L3B Turbo Engine: Specs, Problems, And Reliability

GM 2.7L L3B Turbo Engine: Specs, Problems, and Reliability. The GM L3B engine is the all-new 2.7-liter four-cylinder turbocharged gasoline engine released in the 2025 Chevrolet Silverado 1500 and 2025 GMC Sierra 1500. This engine was designed specifically for use in full-size pickup trucks, and incidentally, it is the first 4-cylinder ever used for GM's full-size pickups. The L3B engine is produced in the USA at Spring Hill Manufacturing, General Motors factory in Spring Hill, Tennessee.

The 2.7 Turbo L3B has a deep-skirt, freely ribbed die-cast aluminum (380 T5) cylinder block with iron liners. It includes a long piston stroke of 4.01 inches (102 mm) that provides the strong low-end torque but on the contrary, this boosted vibrations. To bring smoothness back, the engine block was equipped with a dual balance shaft mechanism. The engine block also has a forged steel crankshaft with hardened journals and tri-metal bearings.

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Title	GM 2.7L L3B Turbo Engine: Specs, Problems, And Reliability
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Published Date	September 29, 2025
Latest Updated Date	September 29, 2025
Uploaded By	Karen R. Russell