The GM LDG is a 3,564 cc, V6 petrol engine produced between 2010 and 2015. It features an aluminium block and heads, dual overhead camshafts (DOHC), and variable valve timing (VVT) on both intake and exhaust camshafts. This architecture was designed to deliver smooth, broad power and improved fuel efficiency for GM's full — size trucks and SUVs.
Fitted primarily to the Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Suburban, the LDG was engineered for strong towi…
All production years (2010–2015) meet US EPA Tier 2 Bin 5 emissions standards (EPA Engine Family Code GMX-LDG).
The GM LDG is a 3,564 cc V6 petrol engine engineered for full-size trucks and SUVs (2010-2015). It combines a DOHC valvetrain with dual variable valve timing to deliver broad, linear power and class-leading fuel economy for its segment. Designed to meet stringent US EPA Tier 2 Bin 5 standards, it offers a compelling blend of capability and efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,564 cc | |
Fuel type | Petrol | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 3.70 in × 3.66 in | |
Power output | 301 hp (224 kW) | |
Torque | 273 lb-ft (370 Nm) | |
Fuel system | Sequential multi-port fuel injection | |
Emissions standard | US EPA Tier 2 Bin 5 | |
Compression ratio | 10.2:1 | |
Cooling system | Water-cooled | |
Turbocharger | None | |
Timing system | Chain-driven, with variable intake and exhaust cam timing | |
Oil type | SAE 5W-30 (API SN/ILSAC GF-5) | |
Dry weight | approx. 375 lbs (170 kg) |
The GM LDG was used across GM's full-size truck and SUV platforms with longitudinal mounting. This engine received platform-specific adaptations-different intake manifolds for trucks vs. SUVs-and shared its core architecture with the LFX 3.6L V6. All adaptations are documented in OEM technical bulletins.
The LDG's primary reliability risk is camshaft position actuator (phaser solenoid) failure, with elevated incidence in high-mileage or poorly maintained vehicles. GM service data indicated a notable number of solenoid replacements before 100,000 miles, while common owner reports cite oil consumption as a secondary concern. Infrequent oil changes and use of incorrect viscosity oil make solenoid clogging critical.
Analysis derived from GM technical bulletins (2010-2016) and aggregated owner repair data (2012-2023). 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 GM LDG is generally reliable with proper maintenance. The main concern is the camshaft position actuators, which should be monitored for failure symptoms. Regular oil changes with the correct 5W-30 oil are essential. With these precautions, the engine can easily reach 200,000+ miles.
The most frequent issues are failure of the camshaft position actuators (phaser solenoids), excessive oil consumption in high-mileage units, leaks from the intake manifold gasket, and coolant leaks from the water pump or crossover pipe. These are well-documented in GM service literature.
The 3.6L LDG V6 was used in several GM full-size vehicles, including the Chevrolet Silverado 1500 (2010-2015), GMC Sierra 1500 (2010-2015), and Chevrolet Suburban (2010-2015). It was typically the base V6 engine for these models.
Yes, within limits. Common upgrades include a cold air intake, performance exhaust, and ECU tune, which can yield 20-30 additional horsepower. Significant power gains require forced induction (turbo/supercharger), which is a complex modification. Its strength is in smooth, linear power delivery.
Fuel economy is competitive for a full-size truck V6. In a 2014 Chevrolet Silverado 1500 2WD, expect around 16 mpg (US) in the city and 23 mpg (US) on the highway. Actual figures vary with vehicle weight, gearing, and driving habits.
Yes. The GM LDG is an interference engine. If the timing chain were to fail or jump significantly, the pistons and valves will collide, causing severe internal engine damage. This makes addressing timing chain noise promptly critical.
GM specifies SAE 5W-30 motor oil meeting API SN/ILSAC GF-5 (or a modern equivalent like API SP) specifications. Regular oil and filter changes every 7,500 miles are crucial for long-term health, especially to protect the VVT system.
Comprehensive technical documentation and regulatory references
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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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