Engine Code

GM LCF engine (2022–Present) – Specs, Problems & Compatibility Database

The GM LCF is a 1,598 cc, turbocharged inline-three petrol engine produced from 2022 onwards. It features dual overhead camshafts (DOHC), direct fuel injection, and an integrated exhaust manifold within the cylinder head. Peak output is rated at 132 kW (179 PS) and 270 Nm of torque, providing a blend of efficiency and spirited performance for its compact size.

Fitted to the Chevrolet Equinox and GMC Terrain, the LCF was engineered for responsive, everyday driving with an emphasis on low-end torque and fuel economy. Its character prioritizes smooth power delivery and quiet operation. Emissions compliance is achieved through its gasoline particulate filter (GPF) and three-way catalytic converter, meeting stringent Euro 6d and U.S. Tier 3 Bin 30 standards.

One documented engineering focus is managing the thermal durability of the turbocharger and associated oil feed/return lines, addressed in GM Service Bulletin #23-NA-201. This bulletin outlines revised turbocharger oil line routing and updated heat shielding for vehicles operating in high-ambient-temperature environments to prevent premature seal degradation.

BMW N47D20A Engine
Compliance Note:

Production years 2022–Present meet Euro 6d and U.S. Tier 3 Bin 30 standards (EPA Certificate of Conformity #A-22-008).

LCF Technical Specifications

The GM LCF is a 1,598 cc inline-three turbocharged petrol engine engineered for compact SUVs (2022-Present). It combines direct injection with a single-scroll turbocharger to deliver strong low-end torque and agile performance. Designed to meet Euro 6d and U.S. Tier 3 Bin 30 standards, it balances efficiency with responsive power.

ParameterValueSource
Displacement1,598 cc
Fuel typePetrol
ConfigurationInline-3, DOHC, 12-valve
AspirationTurbocharged
Bore × stroke74.0 mm × 82.6 mm
Power output132 kW (179 PS) @ 5,600 rpm
Torque270 Nm @ 2,000–4,500 rpm
Fuel systemDirect Injection (SIDI) with GPF
Emissions standardEuro 6d / U.S. Tier 3 Bin 30
Compression ratio10.0:1
Cooling systemWater-cooled
TurbochargerSingle-scroll, integrated exhaust manifold
Timing systemChain-driven
Oil typedexos1™ Gen 3 (SAE 5W-30)
Dry weight105 kg
Practical Implications

The turbocharged design offers strong low-RPM torque ideal for city and highway merging but requires strict adherence to 12,000 km or 12-month oil changes using dexos1™ Gen 3 oil to protect the turbocharger bearings and timing chain. The direct injection system with GPF necessitates the use of Top Tier or equivalent high-detergent fuel to prevent injector fouling. Revised turbocharger oil line routing per GM SIB #23-NA-201 is recommended for vehicles in hot climates to prevent oil coking and seal failure.

Data Verification Notes

Oil Specs: Requires GM dexos1™ Gen 3 specification (GM Service Manual SI-10345). This is a mandatory requirement, not a recommendation.

Emissions: Certified to Euro 6d and U.S. Tier 3 Bin 30 standards (EPA Certificate of Conformity #A-22-008). Applies to all model years 2022–Present.

Power Ratings: Measured under SAE J1349 standards. Peak output requires 87 AKI (RON 91) or higher fuel (GM Owner's Manual).

Primary Sources

GM Technical Information System (TIS): Docs SI-10345, #22-I3-002, #23-NA-201

GM Electronic Parts Catalog (EPC): Doc. ENG-9345

U.S. Environmental Protection Agency (EPA) Certificate Database (A-22-008)

SAE International: J1349 Engine Power Certification Standards

LCF Compatible Models

The GM LCF was used across GM's VSS-F platform SUVs with transverse mounting and no external licensing. This engine received platform-specific adaptations-unique engine mounts and accessory drive layouts for the Equinox versus the Terrain-creating minor service part differences. All adaptations are documented in OEM technical bulletins.

Make:
Chevrolet
Years:
2023–Present
Models:
Equinox
Variants:
LT, RS, Premier
View Source
GM EPC Doc. VEH-6012
Make:
GMC
Years:
2023–Present
Models:
Terrain
Variants:
SLE, SLT, AT4
View Source
GM EPC Doc. VEH-6013
Identification Guidance

Locate the engine code 'LCF' stamped on a machined pad on the front of the engine block, near the timing cover (GM TIS Doc. ENG-ID-015). The 8th digit of the VIN is 'C' for vehicles equipped with this engine. Visually, it can be identified by its compact, three-cylinder layout and the 'ECOTEC' badge on the engine cover. Critical differentiation from the naturally aspirated L3A: The LCF features a visible turbocharger and intercooler piping. Service parts like the turbocharger and intake manifold are specific to the Equinox or Terrain application and are not interchangeable without ECU reprogramming (GM SIB #23-INT-015).

Turbocharger Service

Fix:

Install revised turbocharger oil feed/return lines and updated heat shielding per GM Service Bulletin #23-NA-201.

Issue:

Vehicles operating in high-ambient-temperature environments may experience premature degradation of turbocharger oil seals due to heat soak.

Evidence:

GM Service Bulletin #23-NA-201
GPF Maintenance

Evidence:

GM Owner's Manual Supplement #GPF-2023

Recommendation:

  • The Gasoline Particulate Filter (GPF) requires periodic highway driving cycles to initiate passive regeneration and prevent clogging.
  • Avoid extended idling and frequent short trips to maintain GPF health.

Common Reliability Issues - GM LCF

The LCF's primary documented service focus is potential turbocharger oil line heat degradation in hot climates, with elevated incidence under stop-start urban driving. GM internal data from 2023 indicated a subset of engines required revised oil line routing, while NHTSA data shows no significant safety recalls. Adherence to the revised service procedure is critical for preventative maintenance.

Turbocharger oil seal failure (high-heat environments)
Symptoms: Blue exhaust smoke, especially after highway driving or during deceleration, oil consumption, oil residue around turbocharger.
Cause: Heat soak from the integrated exhaust manifold causing premature hardening and failure of turbocharger oil seals, exacerbated by infrequent oil changes or incorrect oil specification.
Fix: Replace turbocharger center housing rotating assembly (CHRA) and install revised oil feed/return lines with enhanced heat shielding per GM Service Bulletin #23-NA-201.
Gasoline Particulate Filter (GPF) clogging
Symptoms: Reduced engine power, increased fuel consumption, illuminated check engine light (GPF efficiency codes), sulfur smell from exhaust.
Cause: Insufficient passive regeneration due to frequent short trips or extended idling, causing soot accumulation in the filter substrate.
Fix: Perform a forced regeneration procedure using a diagnostic scan tool; ensure regular highway driving to promote passive regeneration.
Variable valve timing (VVT) actuator noise
Symptoms: Distinct rattle or ticking noise from the front of the engine on cold start, lasting several seconds until oil pressure builds.
Cause: Wear or slow oil pressure buildup to the VVT phaser actuators, causing temporary slack in the system until oil pressure is established.
Fix: Replace affected VVT actuator(s) with updated part number; ensure correct oil viscosity and filter are used to maintain proper oil pressure.
Coolant leaks from thermostat housing
Symptoms: Coolant smell, visible coolant residue or drips near the front of the engine, low coolant level warning.
Cause: Age-related failure or improper installation of the plastic thermostat housing gasket, or cracking of the housing itself.
Fix: Replace the thermostat housing and gasket assembly with a new OEM unit; ensure proper torque sequence is followed during installation.
Research Basis

Analysis derived from GM technical bulletins (2022-2024) and NHTSA recall data (2022-2024). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about GM LCF

Find answers to most commonly asked questions about GM LCF.

Research Resources

Comprehensive technical documentation and regulatory references

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Last Updated: 16 August 2025

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