Crankshaft Position Sensor > CHEVROLET CAPTIVA C140 & MALIBU 2.4L ECOTEC ENGINE > 12588992 | GENUINE PART (GM Original Equipment)
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Genuine OEM Engine Component (General Motors Original Equipment).
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Part Number: 12588992 (Official GM OE Number). This part is superseded by 12674703 but is often still cross-referenced.
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Component Name: Crankshaft Position Sensor (CKP Sensor).
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Primary Applications (Engine Specific): This sensor is crucial for GM vehicles equipped with the 2.4L ECOTEC (LE5/LE9) 4-cylinder gasoline engine:
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Chevrolet Captiva Sport (C140 Facelift): Fits the 2.4L Gasoline models (approx. 2011–2015). This confirms your Captiva C140 2.4cc.
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Chevrolet Malibu: Fits 2.4L models (approx. 2008–2012).
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Buick Regal / Verano, GMC Terrain, Chevy Equinox: Fits models with the 2.0L, 2.2L, and 2.4L Ecotec engines from that era.
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Key Function: Provides the Engine Control Module (ECM) with the precise rotational speed and position of the crankshaft, which is the primary timing reference for the entire engine, controlling ignition timing and fuel delivery.
This is a Genuine OEM Crankshaft Position Sensor (CKP Sensor), identified by the General Motors (GM) part number 12588992. This sensor is a factory-original component for GM vehicles utilizing the 2.4L ECOTEC gasoline engine, including the Chevrolet Captiva C140 and the Chevrolet Malibu.
The Crankshaft Position Sensor is arguably the most vital sensor for engine operation:
Primary Timing Reference: The sensor reads the rotation of a reluctor wheel (or similar target) on the crankshaft. This signal is the foundation of the engine's timing.
Ignition and Fuel: The ECM uses this signal to calculate the engine speed (RPM) and determines the exact moment to fire the spark plugs and inject fuel sequentially.
Synchronization: It works in tandem with the Camshaft Position Sensor to ensure the engine is properly synchronized (phase).
Fitment Assurance: The part number 12588992 is a confirmed genuine GM part for the 2.4L Ecotec engine used in the Captiva C140 and Malibu. Using a Genuine Part is critical, as a failing or inaccurate CKP sensor signal is the primary cause of engine stalling, hard starting, or the vehicle not starting at all.
Compatible Vehicle (Primary Applications - Check VIN for confirmation of 2.4L ECOTEC Gasoline Engine):
Chevrolet Captiva (C140) 2.4L Gasoline (approx. 2011–2015)
Chevrolet Malibu 2.4L (approx. 2008–2012)
GMC Terrain / Chevy Equinox 2.4L (approx. 2010–2017)
Part Number:
✔ 12588992 (Crankshaft Position Sensor - Genuine GM OE)
Superseded by: 12674703
Part Type:
✔ Crankshaft Position Sensor (CKP) (Genuine Part, 2.4L Ecotec Gasoline Specific)
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