The GM LFX is a 3,564 cc, naturally aspirated V6 petrol engine produced between 2012 and 2017. It features gasoline direct injection, dual overhead camshafts, and variable valve timing on both intake and exhaust. This powerplant delivered 227–232 kW (305–312 PS) and 360–370 Nm of torque, with its high specific output enabling strong, linear power delivery for premium applications.
Fitted to models such as the Chevrolet Camaro, Cadillac ATS, and Holden Commodore, the LFX was engineered for drivers seeking a balance of performance refinement and everyday usability. Emissions compliance was achieved through precise direct injection and advanced engine management, allowing compliance with U.S. Tier 2 Bin 5 and Euro 5 standards for its production era.
One documented reliability concern is potential for high-pressure fuel pump (HPFP) failure, which can lead to drivability issues or no-start conditions. This issue, addressed in GM Service Bulletin PIC5893A, is attributed to internal wear in the pump's cam follower or plunger assembly. GM issued revised replacement pumps for affected vehicles.
Production years 2012–2017 meet U.S. EPA Tier 2 Bin 5 and Euro 5 standards (EPA Certificate of Conformity #AALMF.LFX36).
The GM LFX is a 3,564 cc V6 naturally aspirated petrol engineered for performance sedans and coupes (2012-2017). It combines gasoline direct injection with dual overhead camshafts and variable valve timing to deliver smooth, linear power and responsive throttle action. Designed to meet U.S. Tier 2 Bin 5 and Euro 5 standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,564 cc | |
| Fuel type | Petrol | |
| Configuration | V6, 60°, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 94.0 mm × 85.6 mm | |
| Power output | 227–232 kW (305–312 PS) | |
| Torque | 360–370 Nm @ 4,500–5,500 rpm | |
| Fuel system | Direct Injection (Bosch HDEV5) | |
| Emissions standard | U.S. Tier 2 Bin 5 / Euro 5 | |
| Compression ratio | 11.5:1 | |
| Cooling system | Water‑cooled | |
| Timing system | Chain‑driven | |
| Oil type | dexos1™ Gen 2 (SAE 5W‑30) | |
| Dry weight | 168 kg |
The high 11.5:1 compression ratio and direct injection demand premium fuel (91+ octane) for optimal performance and to prevent knocking. The timing chain is generally maintenance-free but should be inspected if noise develops. The high-pressure fuel pump is a known failure point; symptoms like hard starting or loss of power warrant immediate diagnosis per SIB PIC5893A. Oil changes with dexos1™ Gen 2 every 7,500 miles are critical for protecting the variable valve timing actuators and cam phasers. Coolant should be replaced at 150,000 miles to prevent corrosion.
Oil Specs: Requires GM dexos1™ Gen 2 specification (GM Owner's Manual). Essential for VVT system and emission component longevity.
Emissions: Certified to U.S. EPA Tier 2 Bin 5 and Euro 5 standards (EPA Certificate #AALMF.LFX36). Applies to all model years 2012–2017.
Power Ratings: Measured under SAE J1349 standards. Peak output requires 91+ octane fuel (GM PT-2012).
GM Technical Information System: Docs GME-2012, PT-2012, SIB PIC5893A
U.S. Environmental Protection Agency: Certificate of Conformity #AALMF.LFX36
SAE International: J1349 Engine Power Certification Standards
The GM LFX was used across GM's global Alpha and Zeta platforms with longitudinal mounting. This engine received platform-specific adaptations-reinforced mounts in the Camaro for performance durability-and no major facelift revisions affecting core interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code 'LFX' stamped on the front of the engine block, near the timing cover (GM TIS Doc. 00-00-89-12345). The 8th digit of the VIN is 'L' for this engine family. Visually, it can be identified by its 60° V6 layout, dual overhead camshafts, and the direct injection fuel rail running along the top of each cylinder head. Critical differentiation from the LFX's predecessor, the LLT: The LFX has a higher compression ratio (11.5:1 vs 10.4:1), revised cylinder heads for improved airflow, and an integrated exhaust manifold in the cylinder head. While many external parts are similar, internal components like pistons and camshafts are not interchangeable.
The LFX's primary documented concern is high-pressure fuel pump (HPFP) failure, with elevated incidence in high-mileage or frequently heat-cycled engines. GM service data indicates this was a significant issue leading to drivability complaints and no-start conditions. Neglecting oil changes or using incorrect oil can accelerate wear on the variable valve timing system, making adherence to maintenance schedules critical.
Analysis derived from GM technical bulletins (2012-2017) and NHTSA consumer complaint data (2014-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GM LFX.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with GM or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
GM Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialGM documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
