The GM LDF is a 3,564 cc, naturally aspirated V6 petrol engine produced between 2008 and 2012. It features a 60-degree bank angle, dual overhead camshafts (DOHC), and variable valve timing on both intake and exhaust camshafts. This architecture delivers smooth, linear power and strong mid-range torque, making it suitable for larger sedans and crossovers.
Fitted primarily to the Cadillac CTS and STS, as well as the Saab 9-5 during GM's ownership, the LDF was engineered for refined, quiet operation and responsive performance. Emissions compliance for its production period was achieved through precise engine management and catalytic conversion, meeting Euro 5 standards.
One documented engineering update addressed potential timing chain tensioner wear, detailed in GM Service Bulletin #10355C. This was linked to material fatigue under high-temperature conditions. The update, implemented in early 2010, revised the tensioner design and material specification to improve durability.
Production years 2008–2012 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5681).
The GM LDF is a 3,564 cc V6 petrol engine engineered for premium mid-size and large sedans (2008-2012). It combines DOHC with dual variable valve timing to deliver smooth, linear power and strong mid-range torque. Designed to meet Euro 5 standards, it balances performance with acceptable fuel economy for its class.
| 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 | 224–239 kW (305–325 PS) | |
| Torque | 355–374 Nm @ 3,200–5,200 rpm | |
| Fuel system | Sequential multi-port fuel injection | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.2:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | GM Dexos1 Gen 2 (SAE 5W‑30) | |
| Dry weight | 172 kg |
The V6 configuration provides smooth, refined power delivery but requires adherence to 15,000 km oil change intervals using GM Dexos1 Gen 2 (5W-30) to maintain engine health and timing chain longevity. The chain-driven timing system is generally robust but early production engines (pre-early 2010) should have the updated tensioner installed if wear is suspected, per GM SIB 10355C. Dual variable valve timing solenoids can become sluggish with poor oil quality, leading to performance codes. Using the correct oil specification is critical for VVT system health.
Oil Specs: Requires GM Dexos1 Gen 2 (5W-30) specification (GM SIB 10355C). Critical for VVT solenoid and timing chain longevity.
Emissions: Euro 5 certification applies to all 2008–2012 LDF models (VCA Type Approval #VCA/EMS/5681).
Power Ratings: Measured under SAE J1349 standards. Output varies by application and model year (GM TIS Doc. A12373).
GM Technical Information System (TIS): Docs A12370, A12371, A12372, A12373, SIB 10355C
VCA Type Approval Database (VCA/EMS/5681)
SAE International: J1349 Engine Power Certification Standards
The GM LDF was used across GM's premium platforms with longitudinal mounting. This engine received minor ECU calibrations for different model applications. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (GM TIS A12376). The 8th VIN digit typically corresponds to the engine type for GM models of this era. Visually, the LDF is identifiable by its aluminum block and heads, and the intake manifold design. Critical differentiation from the LBG engine: The LDF features dual variable valve timing (intake and exhaust), whereas the LBG has only intake VVT. Service parts, particularly for the timing system and VVT actuators, are not interchangeable between LDF and LBG engines.
The LDF's primary documented concern is potential timing chain tensioner wear in early builds, addressed by a GM service bulletin. GM internal data indicated a subset of pre-early 2010 engines required the tensioner update. Adherence to correct oil specification and change intervals is critical to prevent secondary issues like VVT solenoid failure.
Analysis derived from GM technical bulletins (2009-2012) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GM LDF.
Comprehensive technical documentation and regulatory references
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GM Official Site
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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
Type-approval guidance and documentation.
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