The GM LDS is a 3,564 cc, 60° V6 petrol engine produced between 2007 and 2011. It features a dual overhead camshaft (DOHC) design with variable valve timing (VVT) and port fuel injection, delivering 184 kW (250 PS) and 339 Nm of torque. Its aluminum block and head construction prioritizes a favorable power — to — weight ratio for refined performance.
Fitted to premium models such as the Cadillac CTS and STS, the LDS was engineered for a balance of smooth, linear power delivery an…
All LDS engines meet US EPA Tier 2 Bin 5 emissions standards (EPA Certificate of Conformity #A-69-07). No Euro standard compliance applies as it was not offered in European markets.
The GM LDS is a 3,564 cc 60° V6 petrol engine engineered for mid-size luxury sedans (2007-2011). It combines port fuel injection with dual overhead camshafts and variable valve timing to deliver smooth, linear power. Designed to meet US EPA Tier 2 standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,564 cc | |
Fuel type | Petrol | |
Configuration | 60° V6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 94.0 mm × 85.6 mm | |
Power output | 184 kW (250 PS) @ 6,400 rpm | |
Torque | 339 Nm @ 2,800 rpm | |
Fuel system | Sequential multi-port fuel injection (SFI) | |
Emissions standard | US EPA Tier 2 Bin 5 | |
Compression ratio | 10.2:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 168 kg |
The GM LDS was used across GM's Sigma platform with longitudinal mounting. This engine received no major platform-specific adaptations within its production run. All applications are documented in OEM service manuals.
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The LDS's primary reliability risk is VVT solenoid failure, with a documented incidence in early production vehicles. GM's own service data and bulletin 07187A confirm this was a design-related issue, not isolated to specific usage. Vehicles with infrequent oil changes or using non-Dexos oil are at greater risk, making adherence to the maintenance schedule critical.
Analysis derived from GM technical bulletins (2007-2011) and NHTSA investigation data. 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 LDS is a smooth and powerful engine, but its long-term reliability depends on addressing the known VVT solenoid issue. Once the updated solenoids are installed, the engine's core is robust. Strict adherence to the oil change schedule using Dexos1 oil is paramount for longevity, as is addressing any coolant leaks promptly to prevent internal damage.
The most common problem is VVT solenoid failure. Other frequent issues include coolant leaks from the water pump, timing chain guide wear, and intake manifold gasket leaks. These are extensively documented in GM service bulletins and owner reports.
The LDS was used in GM's premium Cadillac lineup from 2007 to 2011. This includes the Cadillac CTS, STS, and SRX. It was not used in Chevrolet or GMC models.
Yes, the LDS responds well to tuning. An ECU remap (‘tune’) can yield modest power gains (+15-30 HP). More significant gains require hardware modifications like a performance camshaft, headers, and a high-flow intake, though the naturally aspirated design has inherent limits compared to turbocharged engines.
Fuel economy is typical for a 3.6L V6 in a luxury vehicle. Expect around 16-18 mpg (US) in combined city/highway driving. Highway cruising can yield 24-26 mpg (US), while city driving will be lower, around 13-15 mpg (US).
Yes. The LDS is an interference engine. This means that if the timing chain were to fail or jump, the pistons and valves would collide, causing catastrophic internal engine damage. This makes addressing timing chain wear or guide issues promptly very important.
GM mandates the use of Dexos1 specification oil, typically in a 5W-30 viscosity. This oil is specifically formulated for GM's V6 and V8 engines. Using the correct oil and changing it at the recommended intervals (every 7,500 miles) is critical for engine health, especially for the VVT system and timing chain.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
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