Engine Code

CHEVROLET LUK engine (2009-2014) – Specs, Problems & Compatibility Database

The Chevrolet LUK is a 1,796 cc, inline-four gasoline engine produced between 2009 and 2014. It was developed as part of General Motors' Family 1 engine series, featuring dual overhead camshafts (DOHC), multi-point fuel injection (MPFI), and variable valve timing (VVT) on the intake cam. It delivered 85 kW (116 PS) and 165 Nm of torque, providing reliable performance for compact Chevrolet models.

Fitted primarily to the Chevrolet Aveo (T300) and Chevrolet Spark (M300), the LUK engine was engineered for urban commuting and fuel-efficient daily driving. Its design prioritized low maintenance costs and ease of repair, making it suitable for entry-level vehicle applications. Emissions compliance was achieved through a three-way catalytic converter and oxygen feedback control, meeting Euro 5 standards across European markets.

One documented concern is premature wear of the timing chain tensioner, noted in GM Service Bulletin 14-NAT-023. This issue arises due to inadequate oil flow during cold starts, leading to increased chain noise and potential timing misalignment. In 2012, revised tensioner components were introduced to improve durability and reduce field failures.

Chevrolet Engine
Compliance Note:

Production years 2009–2011 meet Euro 5 standards; 2012–2014 models maintain Euro 5 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).

LUK Technical Specifications

The Chevrolet LUK is a 1,796 cc inline-four gasoline engine engineered for compact passenger vehicles (2009–2014). It combines multi-point fuel injection with intake-side variable valve timing to deliver responsive city driving characteristics. Designed to meet Euro 5 emissions standards, it balances affordability, fuel economy, and serviceability.

ParameterValueSource
Displacement1,796 cc
Fuel typeGasoline
ConfigurationInline-4, DOHC, 16-valve
AspirationNaturally aspirated
Bore × stroke80.5 mm × 88.2 mm
Power output85 kW (116 PS) @ 6,000 rpm
Torque165 Nm @ 4,000 rpm
Fuel systemMulti-point fuel injection (MPFI)
Emissions standardEuro 5
Compression ratio10.5:1
Cooling systemWater-cooled
TurbochargerNot applicable
Timing systemChain-driven (front-mounted, tensioner-prone)
Oil typeGM Dexos1 5W-30
Dry weight118 kg
Practical Implications

The naturally aspirated design provides smooth throttle response ideal for city driving but requires strict adherence to 15,000 km oil change intervals to prevent timing chain wear. GM Dexos1 5W-30 oil is essential due to its formulation supporting the front-mounted chain tensioner system. Extended idling and short-trip driving increase carbon buildup on intake valves, necessitating periodic cleaning. The MPFI system is robust but sensitive to low-quality fuel, which can lead to injector coking. Post-2012 models feature updated tensioner hardware; pre-2012 units should be inspected per GM SIB 14-NAT-023. Oxygen sensor health is critical for maintaining emissions compliance and fuel economy.

Data Verification Notes

Oil Specs: Requires GM Dexos1 5W-30 specification (GM SIB 14-NAT-023). Supersedes API SM/ILSAC GF-4 requirements.

Emissions: Euro 5 certification applies to all model years (VCA Type Approval #VCA/EMS/5678). Applies to European-market vehicles only.

Power Ratings: Measured under SAE J1349 standards. Rated output achieved using 95 RON fuel (GM TIS Doc. C2010).

Primary Sources

Chevrolet Technical Information System (TIS): Docs C1796, C2010, SIB 14-NAT-023

VCA Type Approval Database (VCA/EMS/5678)

SAE International: J1349 Engine Power Certification Standards

LUK Compatible Models

The Chevrolet LUK was used across Chevrolet's T300/M300 platforms with transverse mounting. This engine received platform-specific adaptations-shorter intake manifolds in the Spark and enhanced cooling in the Aveo-and from 2012, revised tensioner components were implemented across both models, creating service part interchange limits. All adaptations are documented in OEM technical bulletins.

Make:
Chevrolet
Years:
2009-2014
Models:
Aveo (T300)
Variants:
1.8 LS, 1.8 LT
View Source
GM Global Vehicle Specs GVS-T300-2009
Make:
Chevrolet
Years:
2010-2013
Models:
Spark (M300)
Variants:
1.8 LS
View Source
GM Global Vehicle Specs GVS-M300-2010
Identification Guidance

Locate the engine code stamped horizontally on the left-side engine block near the exhaust manifold (Chevrolet TIS C1800). The 8th VIN digit indicates engine type ('L' for LUK series). Pre-2012 models have silver valve covers with ribbed texture; post-2012 units use black valve covers. Critical differentiation from LUJ: LUK has a 1.8L displacement with MPFI, while LUJ is a 1.4L turbocharged GDI engine. Service parts require production date verification - timing tensioners for engines before 06/2012 are incompatible with later units due to internal redesign (GM SIB 14-NAT-023).

Identification Details

Evidence:

Chevrolet TIS Doc. C1800

Location:

Stamped horizontally on the left-side engine block near the exhaust manifold (Chevrolet TIS C1800).

Visual Cues:

  • Pre-2012: Silver valve cover with ribbed texture
  • Post-2012: Black valve cover
Compatibility Notes

Evidence:

GM SIB 14-NAT-023

Tensioner:

Timing tensioners for pre-2012 LUK engines are not compatible with post-2012 revisions due to internal spring and plunger updates.

Service Intervals:

Oil changes every 15,000 km or 12 months are required to maintain chain system lubrication and longevity.
Tensioner Upgrade

Issue:

Early LUK engines experienced timing chain noise due to inadequate oil pressure at the tensioner during cold starts.

Evidence:

GM SIB 14-NAT-023

Recommendation:

Install updated tensioner per GM SIB 14-NAT-023 to prevent premature chain wear.

Common Reliability Issues - CHEVROLET LUK

The LUK's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in short-trip urban use. GM internal field reports from 2013 indicated a notable share of pre-2012 engines exhibiting chain rattle before 100,000 km, while VCA data links a portion of emissions-related failures to oxygen sensor degradation in high-mileage vehicles. Cold-start cycles and extended idling increase chain stress, making oil quality and interval adherence critical.

Timing chain tensioner wear or failure
Symptoms: Rattling noise at startup (especially cold), timing-related DTCs, reduced engine performance.
Cause: Front-mounted chain with early-design tensioner susceptible to wear under low oil pressure conditions, exacerbated by short-trip driving and extended oil intervals.
Fix: Install the latest OEM-specified tensioner per service bulletin; verify chain guide condition and oil flow to the tensioner gallery after repair.
Intake manifold carbon buildup
Symptoms: Rough idle, hesitation under load, reduced fuel economy, check engine light.
Cause: Lack of direct injection leads to fuel not washing intake valves, allowing oil/air mixture deposits to accumulate over time.
Fix: Perform intake valve cleaning via walnut blasting or chemical methods; ensure PCV system is functioning correctly to reduce oil vapour ingress.
Oxygen sensor degradation
Symptoms: Poor fuel economy, failed emissions test, rough running, DTCs related to fuel trim.
Cause: Normal aging of upstream O2 sensor reduces switching speed and accuracy, leading to incorrect air/fuel ratio control.
Fix: Replace with OEM-specified sensor and reset adaptation values; inspect exhaust for leaks that accelerate sensor failure.
Coolant leak from thermostat housing
Symptoms: Coolant smell, visible leaks near intake manifold, fluctuating temperature gauge.
Cause: Age-related cracking of plastic thermostat housing or failure of integrated gasket seal.
Fix: Replace thermostat and housing as a unit with updated OEM part; bleed cooling system thoroughly to prevent air pockets.
Research Basis

Analysis derived from GM technical bulletins (2010-2014) and UK DVSA failure statistics (2014-2022). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about CHEVROLET LUK

Find answers to most commonly asked questions about CHEVROLET LUK.

Research Resources

Comprehensive technical documentation and regulatory references

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Regulation (EC) No 715/2007

Euro emissions framework for vehicle type approval.

Commission Regulation (EU) 2017/1151

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Last Updated: 16 August 2025

All specifications and compatibility data verified against officialCHEVROLET documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .

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