Engine GM LHU

The General Motors LHU 2.0-liter turbo engine was produced in the USA from 2010 to 2017 and was installed on charged versions of such popular models as the Buick Verano or Regal. This power unit on Opel cars is known under its own index A20NHT.

The second generation of GM Ecotec includes: LDK, LHU, LNF, LAF, LEA, LE5, LE9.


Production years 2010-2017
Displacement, cc 1998
Fuel system direct injection
Power output, hp 220 – 275
Torque output, Nm 350 – 410
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 86
Piston stroke, mm 86
Compression ratio 9.2
Features DOHC
Hydraulic lifters no
Timing drive chain
Phase regulator Dual CVCP
Turbocharging BorgWarner K04
Recommended engine oil 5W-30
Engine oil capacity, liter 6.0
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Buick Verano 2014)
— city
— highway
— combined
Engine lifespan, km ~220 000
Weight, kg 163

The engine was installed on:

  • Buick Regal 5 (GMX350) in 2010 – 2017;
  • Buick Verano 1 (D1SB) in 2012 – 2016.

Disadvantages of the GM LHU engine

  • The main problem with this turbo engine is a high tendency to knock.
  • Therefore, it is important to monitor the quality of the fuel used and the cleanliness of the radiators.
  • The second most popular problem is the rather modest resource of the timing chain.
  • And if you miss the replacement of chains, you will have to buy expensive phase regulators.
  • The weaknesses of the engine also include a short-lived throttle assembly and injection pump.

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