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 LF…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The LFX is generally a robust and powerful engine with proper maintenance. Its main long-term concerns are the high-pressure fuel pump and potential VVT actuator rattle. Regular oil changes with dexos1™ Gen 2 oil and using premium fuel are crucial for longevity. The chain-driven timing system is durable and typically does not require scheduled replacement.
The most frequent issues are high-pressure fuel pump failure causing hard starts, variable valve timing actuator rattle on cold starts, and intake manifold runner control (IMRC) failures triggering check engine lights. Coolant leaks from the water pump are also a known, repairable concern. These are documented in GM service bulletins.
The 3.6L LFX V6 petrol engine was used in the Chevrolet Camaro (2012-2015 LT/LT1), Cadillac ATS (2013-2017), Holden Commodore (2013-2017 SV6/SS), and Chevrolet Caprice PPV (2014-2017 9C1). It was the standard V6 in these performance-oriented applications during its production run.
Yes, the LFX responds very well to ECU tuning. Stage 1 tunes can safely add 20-30 kW and 30-40 Nm by optimizing timing and fueling. The stock internals are strong enough for these gains. More aggressive modifications like a cold air intake and cat-back exhaust can yield further improvements. The high compression ratio limits significant forced induction without internal upgrades.
Fuel economy is moderate for its power. In a Cadillac ATS RWD, expect around 12.4 L/100km city and 8.1 L/100km highway, or approximately 24 mpg combined (US). Real-world figures vary with driving style, but it typically achieves 20-28 mpg (US) on mixed roads, reflecting its performance character.
Yes. The GM LFX is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the chain system is very reliable with proper oil maintenance.
GM mandates the use of dexos1™ Gen 2 full synthetic oil, typically in 5W-30 viscosity. Using the correct specification is critical for protecting the variable valve timing system, timing chain, and emission systems. Oil should be changed every 7,500 miles or 12 months, whichever comes first, under normal driving conditions.
Comprehensive technical documentation and regulatory references
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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
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