Engine GM L86

The 6.2-liter V8 GM L86 engine was produced by the American concern from 2013 to 2020 and was installed on popular pickup trucks and SUVs such as the Chevrolet Tahoe or Cadillac Escalade. An updated modification of such a power unit is known under its own index L87.

Vortec line: LR4, LM7, LY2, LY5, LFA, L92, L86.


Production years 2013-2020
Displacement, cc 6162
Fuel system direct injection
Power output, hp 409 – 426
Torque output, Nm 610
Cylinder block aluminum V8
Block head aluminum 16v
Cylinder bore, mm 103.25
Piston stroke, mm 92
Compression ratio 11.5
Features OHV
Hydraulic lifters yes
Timing drive chain
Phase regulator yes
Turbocharging no
Recommended engine oil 0W-20
Engine oil capacity, liter 7.6
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Chevrolet Tahoe 2017)
— city
— highway
— combined
Engine lifespan, km ~300 000

The engine was installed on:

  • Cadillac Escalade 4 (GMTK2XL) in 2014 – 2020;
  • Chevrolet Silverado 3 (GMTK2RC) in 2013 – 2019;
  • Chevrolet Suburban 11 (GMTK2YC) in 2014 – 2020;
  • Chevrolet Tahoe 4 (GMTK2UC) in 2014 – 2020;
  • GMC Sierra 4 (GMTK2RG) in 2013 – 2019;
  • GMC Yukon 4 (GMTK2UG) in 2014 – 2020;
  • GMC Yukon XL 4 (GMTK2YG) in 2014 – 2020.

Disadvantages of the GM L86 engine

  • The main problem here is the sticking of the hydraulic lifters and the wear of the camshaft.
  • The cause can be either bad oil or a broken hydraulic lifter cassette.
  • On specialized forums, they complain about weak valve springs, sometimes they simply burst.
  • Monitor the condition of the pump and radiators, as the motor is very afraid of overheating.
  • Oil consumption is also regularly encountered due to poor crankcase ventilation.

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