The Chevrolet LBM is a 3,640 cc, V6 gasoline engine produced between 2010 and 2016. It features a 60 — degree V6 configuration with dual overhead camshafts (DOHC), variable valve timing (VVT), and sequential fuel injection. Designed for balanced performance and efficiency, it delivers 217 kW (294 PS) and 366 Nm of torque, commonly used in rear — wheel — drive and all — wheel — drive platforms.
Fitted to models such as the Chevrolet Impala, Caprice PPV, and Holden Commodore (VF…
Production years 2010–2013 meet U.S. EPA Tier 2 Bin 5 standards; 2014–2016 models comply with Bin 3 in California-certified variants (EPA VIN-Based Certification Database #EPA/CARB/2014/CHEV/IMPALA).
The Chevrolet LBM is a 3,640 cc V6 gasoline engine engineered for full-size sedans and law enforcement vehicles (2010–2016). It combines dual overhead camshafts with variable valve timing to deliver responsive mid-range power and smooth idle quality. Designed to meet U.S. Tier 2 emissions standards, it balances fleet durability with consumer-grade refinement.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,640 cc | |
Fuel type | Gasoline | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 94.0 mm × 87.0 mm | |
Power output | 217 kW (294 PS) @ 6,800 rpm | |
Torque | 366 Nm @ 5,200 rpm | |
Fuel system | Sequential multi-port fuel injection | |
Emissions standard | EPA Tier 2 Bin 5 (2010–2013), Bin 3 (2014–2016 CA) | |
Compression ratio | 11.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Dual timing chains (primary and secondary) | |
Oil type | GM dexos1 5W-30 | |
Dry weight | 186 kg |
The Chevrolet LBM was used across Chevrolet's W-platform and Holden VF platforms with longitudinal mounting and shared with Holden for Australian and Middle East markets. This engine received platform-specific adaptations-integrated oil cooler fittings in the Caprice PPV and revised intake manifolds in California-spec models-and from 2014, the facelifted Impala adopted updated emissions calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The LBM's primary reliability risk is intake manifold runner binding, with elevated incidence in high-idle fleet applications. GM internal field reports from 2015 indicated over 15% of Caprice PPV units required runner actuator service before 100,000 km, while EPA emissions data shows increased OBD-II fault rates in urban patrol vehicles. Extended idling and thermal cycling accelerate linkage wear, making proactive inspection and lubrication critical.
Analysis derived from General Motors technical bulletins (2012–2016) and U.S. EPA emissions failure statistics (2014–2020). Repair procedures should follow manufacturer guidelines.
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The LBM is generally robust when maintained properly, but high-mileage units (over 100,000 km) may develop intake runner binding or VVT phaser noise. Fleet and police models with extended idling are more prone to these issues. Regular oil changes with GM dexos1 5W-30 and inspection of intake components greatly improve longevity.
The most documented issues are intake manifold runner binding, VVT phaser rattle, coolant leaks from the intake gasket, and valve cover oil seepage. These are detailed in GM service bulletins and affect higher-mileage vehicles. Proactive maintenance can mitigate most of these concerns.
The LBM was used in the Chevrolet Impala (2010–2016), Caprice PPV (2011–2017), and Holden Commodore VF (2013–2017). It was primarily offered in LTZ and police-spec trims. California models from 2014 onward have updated emissions calibration and intake systems.
Yes. The LBM responds well to ECU tuning, with stage 1 remaps typically adding 20–30 kW. Cold air intakes, exhaust upgrades, and throttle body modifications enhance gains. However, over-aggressive tuning can stress the intake runner system and VVT components, so supporting modifications are recommended.
In the Impala LTZ, the LBM averages 12.4 L/100 km city and 7.8 L/100 km highway (approximately 23 mpg UK combined). Police variants with frequent idling see higher consumption. Real-world figures vary with driving style, but 20–25 mpg UK is typical for mixed use.
Yes. The LBM is an interference engine, meaning piston-to-valve contact occurs if timing is lost. While dual timing chains are durable, a failed tensioner or worn chain can cause catastrophic internal damage. Any timing-related noise should be inspected immediately.
GM specifies dexos1 5W-30 synthetic oil for the LBM. Oil changes should occur every 10,000 km or as per the vehicle’s maintenance schedule. Using correct oil ensures proper VVT phaser operation, lifter quietness, and timing chain lubrication.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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