The GM LSD is a 3,564 cc, naturally aspirated V6 petrol engine produced between 2013 and 2017. 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 premium sedans and crossovers.
Fitted primarily to the Cadillac CTS and XTS, the LSD 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 camshaft position sensor failure, detailed in GM Service Bulletin #13467B. This was linked to electrical signal degradation under high-temperature conditions. The update, implemented in early 2014, revised the sensor design and connector sealing to improve reliability.
Production years 2013–2017 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5685).
The GM LSD is a 3,564 cc V6 petrol engine engineered for premium mid-size and large sedans (2013-2017). 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 | 11.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | GM Dexos1 Gen 2 (SAE 5W‑30) | |
| Dry weight | 168 kg |
The high-compression V6 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 VVT system longevity. The chain-driven timing system is robust. Dual variable valve timing solenoids can become sluggish with poor oil quality, leading to performance codes. Early production engines (pre-early 2014) should have the updated camshaft position sensor installed if experiencing intermittent faults, per GM SIB 13467B.
Oil Specs: Requires GM Dexos1 Gen 2 (5W-30) specification (GM SIB 13467B). Critical for VVT solenoid and sensor longevity.
Emissions: Euro 5 certification applies to all 2013–2017 LSD models (VCA Type Approval #VCA/EMS/5685).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across applications (GM TIS Doc. A12413).
GM Technical Information System (TIS): Docs A12410, A12411, A12412, A12413, SIB 13467B
VCA Type Approval Database (VCA/EMS/5685)
SAE International: J1349 Engine Power Certification Standards
The GM LSD 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 A12415). The 8th VIN digit typically corresponds to the engine type for GM models of this era. Visually, the LSD is identifiable by its aluminum block and heads, and the intake manifold design. Critical differentiation from the LFX engine: The LSD has a higher 11.5:1 compression ratio and is specific to the third-generation CTS and XTS. Service parts, particularly for sensors and gaskets, may differ between LSD and LFX engines.
The LSD's primary documented concern is potential camshaft position sensor failure in early builds, addressed by a GM service bulletin. GM internal data indicated a subset of pre-early 2014 engines required the sensor 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 (2013-2017) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GM LSD.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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