Crankshaft Position Sensor (CKP) > CHEVROLET COLORADO & TRAILBLAZER 2.5L / 2.8L DURAMAX DIESEL ENGINE > 12625756 | GENUINE PART (GM Original Equipment)
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Genuine OEM Engine Component (General Motors Original Equipment, 100% Original and Brand New as per vendors).
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Part Number: 12625756 (Official GM OE Number).
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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 2.5L and 2.8L Duramax Diesel engines:
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Chevrolet Colorado (RG Platform): Fits both the 2.5L and 2.8L Diesel models (typically 2012–2016). This is a confirmed match for your Colorado Diesel.
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Chevrolet Trailblazer: Fits the 2.5L and 2.8L Diesel models (typically 2012–2016).
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Note: This part is frequently specified as the sensor for the Diesel engines (2.5L/2.8L), which is why it is labeled "Big" compared to other sensors.
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Key Function: Provides the Engine Control Module (ECM) with the primary timing reference for the engine, crucial for controlling the precise injection timing of the Common Rail Diesel (CRDi) system.
This is a Genuine OEM Crankshaft Position Sensor (CKP Sensor), identified by the General Motors (GM) part number 12625756. This part is the factory-original sensor for the Chevrolet Colorado and Trailblazer models equipped with the 2.5L and 2.8L Duramax Diesel engines.
The Crankshaft Position Sensor is the most critical sensor for the timing of any engine, but especially for modern diesel engines:
Diesel Injection Timing: The sensor reads the rotation of the crankshaft, providing the ECM with the exact position of the pistons. The ECM uses this data, combined with the Camshaft Sensor signal, to determine the perfect moment to execute the high-pressure fuel injection events in the CRDi system.
Engine Speed: It determines the engine's speed (RPM), which is essential for all running calculations.
Start-up: A good, clean signal from this sensor is necessary for the ECM to allow the engine to start.
Fitment Assurance: The part number 12625756 is widely listed across GM and regional vendor catalogs as the correct, genuine CKP sensor for the 2012-2016 Chevrolet Colorado/Trailblazer 2.5L/2.8L Diesel models.
Using the Genuine Part (12625756) ensures:
High Signal Quality: Crucial for preventing hard starting, misfires, and timing-related error codes (like P0335) in the sensitive Duramax Diesel engine.
Guaranteed Fitment and Durability: Designed by GM to work perfectly with the engine's reluctor wheel and withstand the harsh operating environment of a diesel truck.
Compatible Vehicle (Primary Applications - Check VIN for confirmation of 2.5L / 2.8L Duramax Diesel Engine):
Chevrolet Colorado 2.5L / 2.8L Diesel (approx. 2012–2016)
Chevrolet Trailblazer 2.5L / 2.8L Diesel (approx. 2012–2016)
Holden Colorado (RG) 2.5L Diesel (specific variants)
Part Number:
✔ 12625756 (Crankshaft Position Sensor - Genuine GM OE)
Part Type:
✔ Crankshaft Position Sensor (CKP) (Genuine Part, 2.5L / 2.8L Duramax Diesel Specific)
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