GM LIH Engine Specs, Problems And Reliability

GM LIH Engine Specs, Problems And Reliability

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By Scott Matthew

The General Motors LIH 1.2-liter 3-cylinder turbo engine, in production since 2019 in Korea, represents a technological leap in power units. This innovative engine finds its home in crossovers built on the VSS-F platform, notably featured in models like the Buick Encore GX and Chevrolet Trailblazer 3.

E-Turbo Family Inclusions: Belonging to the E-Turbo family, the LIH engine is part of a lineage that also includes the L3T.

For the Opel Astra, variants of this engine are identified by the F12SHL, F12SHT, and F12SHR indices.

Application Across Models

The LIH 1.2-liter engine has been successfully integrated into several models, showcasing its versatility and performance. Notable installations include:

  • Buick Encore GX 1 (VSS-F) since 2019
  • Buick Envista 1 (VSS-F) since 2022
  • Chevrolet Trailblazer 3 (VSS-F) since 2020
  • Chevrolet Trax 2 (VSS-F) since 2023

Driving the Next Generation

As an integral component of modern crossovers, this engine plays a crucial role in driving advancements in both efficiency and performance. Its incorporation in diverse models across the General Motors spectrum underscores its adaptability and contribution to the evolving landscape of automotive technology.

Engine Specs

Production YearsSince 2019
Displacement, cc1193
Fuel SystemDirect Injection
Power Output, hp137
Torque Output, Nm219
Cylinder BlockAluminum R3
Block HeadAluminum 12v
Cylinder Bore, mm75
Piston Stroke, mm90
Compression Ratio9.5 – 10.0
Hydraulic LiftersYes
Timing DriveBelt
Phase RegulatorDCVCP
Recommended Engine Oil5W-30
Engine Oil Capacity, liter4.0
Fuel TypePetrol
Euro StandardsEURO 6d
Fuel Consumption, L/100 km
  • City: 8.4
  • Highway: 6.2
  • Combined: 7.8
Engine Lifespan, km~250,000
Weight, kg102

Note: The specifications provided are for the engine model, and the fuel consumption values are specific to the Buick Encore GX 2021 model.

GM LIH Engine Problems

The GM LIH engine has been reported to have several issues based on user experiences:

  1. Noises, Vibrations, and Start-Stop System Glitches: On specialized forums, users have criticized the LIH engine for noises, vibrations, and glitches associated with the Start-Stop system. These issues may affect the overall driving experience and comfort.
  2. Carbon Deposits on Intake Valves: Similar to many direct injection engines, the LIH engine is said to suffer from carbon deposits on the intake valves. Carbon buildup can impact engine performance over time and may necessitate periodic cleaning.
  3. Timing Belt Lubrication: The engine features a timing belt that operates in an oil bath. It’s recommended to change the lubricant regularly to maintain the longevity and proper functioning of the timing belt.
  4. EVAP Fuel Vapor Recovery System Issues: There are reported complaints about the operation of the EVAP (Evaporative Emission Control System) fuel vapor recovery system. Issues with this system can affect emissions control and may need attention.

Addressing these concerns may involve regular maintenance, addressing carbon deposits, adhering to recommended lubrication schedules, and seeking professional assistance for any Start-Stop system glitches or other operational issues. Staying informed about manufacturer recommendations and potential recalls can also contribute to the engine’s overall reliability and performance.

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