Engine GM L3B

The 2.7-liter V6 General Motors L3B engine has been produced at the Tennessee plant since 2018 and is installed in rear-wheel drive or all-wheel drive models such as the Cadillac CT4 or Chevrolet and GMC pickups. The modification of this motor, derated to 237 hp / 353 Nm, is known under the index L2R.

High Feature engine family: L3B, LP9, LF1, LFX, LFY, LGX, LLT, LY7.


Production years since 2018
Displacement, cc 2727
Fuel system direct injection
Power output, hp 310 – 325
Torque output, Nm 472 – 583
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 92.25
Piston stroke, mm 102
Compression ratio 10.0
Features AFM, SCS
Hydraulic lifters yes
Timing drive chain
Phase regulator Dual VVT
Turbocharging BorgWarner B03
Recommended engine oil 5W-30
Engine oil capacity, liter 5.7
Fuel type petrol
Euro standards EURO 6
Fuel consumption, L/100 km (for Cadillac CT4-V 2020)
— city
— highway
— combined
Engine lifespan, km ~250 000
Weight, kg 165

The engine was installed on:

  • Cadillac CT4 I (A2SL) since 2019;
  • Chevrolet Colorado 3 (GMT31XX-2) since 2023;
  • Chevrolet Silverado 4 (GMT1RC) since 2018;
  • GMC Canyon 3 (GMT31XX-2) since 2023;
  • GMC Sierra 5 (GMT1RG) since 2018.

Disadvantages of the GM L3B engine

  • The engines of the first year of production came under recall, they changed the wiring harness.
  • This engine has only direct injection and suffers from carbon deposits on the intake valves.
  • Fuel injectors, as well as injection pumps, are very sensitive to the quality of gasoline here.
  • And there are also complaints about malfunctions in the system for deactivating some of the AFM cylinders.

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