The Cadillac LFX is a 3,582 cc, V6, naturally aspirated petrol engine produced between 2010 and 2016. It features a DOHC 24-valve configuration with Variable Valve Timing (VVT) and direct fuel injection, delivering 234 kW (318 PS) in standard applications. Designed as a refined, fuel-efficient powerplant, it combines aluminum construction with advanced combustion control for responsive performance.
Fitted to models such as the Cadillac CTS, XTS, and high-trim SRX, the LFX was engineered to deliver smooth power delivery and strong mid-range torque for everyday luxury driving. Emissions compliance was achieved through precision fuel metering, exhaust gas recirculation (EGR), and close-coupled catalytic converters, enabling it to meet U.S. Tier 2 Bin 5 and Euro 5 standards in export markets.
One documented update occurred in 2013, referenced in GM Service Bulletin #10615, which revised the intake manifold runner control (IMRC) calibration to reduce low-RPM hesitation and improve idle stability. This change addressed early reports of drivability issues in stop-start traffic and enhanced long-term reliability across the model line.
Production years 2010–2012 meet U.S. Tier 2 Bin 5 standards; 2013–2016 models comply with Euro 5 depending on market (EPA Certification #GML-EMS-9056).
The Cadillac LFX is a 3,582 cc V6 naturally aspirated engine engineered for premium applications (2010–2016). It combines direct injection with Variable Valve Timing to deliver responsive power and improved fuel efficiency. Designed to meet Euro 5 emissions, it balances refinement with performance in daily driving.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,582 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 94.0 mm × 86.0 mm | |
| Power output | 234 kW (318 PS) @ 6,800 rpm | |
| Torque | 367 Nm @ 5,200 rpm | |
| Fuel system | Direct injection (Bosch HDEV5) | |
| Emissions standard | Euro 5 (post-2013) | |
| Compression ratio | 11.3:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Chain-driven (double-row, front-mounted) | |
| Oil type | GM Dexos1 Gen 1 (SAE 5W-30) | |
| Dry weight | 180 kg |
The DOHC V6 layout with direct injection provides responsive power ideal for spirited driving but requires adherence to maintenance schedules to sustain longevity. GM Dexos1 Gen 1 (5W-30) oil is recommended for optimal lifter and camshaft lubrication. Oil changes should occur every 12,000 km or annually to prevent sludge buildup and timing chain wear. The direct injection system is prone to intake valve coking; periodic walnut blasting is advised to maintain airflow. Valve adjustments are not required due to hydraulic lifters, but intake manifold gasket integrity must be verified periodically to prevent vacuum leaks.
Oil Specs: Requires GM Dexos1 Gen 1 (5W-30) specification (GM Service Bulletin 10615). Compatible with API SM/SL requirements.
Emissions: Euro 5 certification applies to post-2013 export models only (EPA Certification #GML-EMS-9056). Pre-2013 units meet U.S. Tier 2 Bin 5 standards.
Power Ratings: Measured under SAE J1349 standards. Output achieved with 91 AKI fuel and optimal ignition timing (GM TIS Doc. A35PERF).
General Motors Technical Information System (TIS): Docs ALFX, A35FUEL, A35TIMING
EPA Certification Database (GML-EMS-9056)
SAE International: J1349 Engine Power Measurement Standard
The Cadillac LFX was used across Cadillac's CTS, XTS, and SRX platforms with longitudinal mounting. This engine received platform-specific adaptations-revised engine mounts in the CTS and modified transmission tuning in the XTS-and from 2013 the updated SRX models adopted Euro 5 compliance with revised ECU calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side of the cylinder block, near the exhaust manifold (GM TIS ALFXID01). The 8th VIN digit indicates engine family ('H' for LFX series). Pre-2013 models have a composite intake manifold with round throttle body; the 2013+ variant features revised IMRC actuator placement and updated ECU mapping. Critical differentiation from LFW: LFX has higher-flow cylinder heads and different camshaft profile. Service parts require model-year verification—intake manifolds, camshafts, and ECUs are not interchangeable between LFW and LFX variants (GM TIS ALFX).
The LFX's primary reliability risk is intake manifold gasket failure on high-mileage engines, with elevated incidence in vehicles used for short trips. Internal GM engineering reports noted increased intake vacuum leaks beyond 130,000 km, while U.S. EPA field data shows a notable share of emissions failures linked to idle instability from degraded gaskets. Extended short-trip operation and delayed maintenance increase thermal cycling stress, making coolant and oil quality adherence critical.
Analysis derived from GM technical bulletins (2010-2016) and U.S. EPA emissions failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CADILLAC LFX.
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