Crankshaft Position Sensor (CKP) > CHEVROLET COLORADO / TRAILBLAZER 2.5L / 2.8L Duramax DIESEL ENGINE > 55593759 | GENUINE PART (GM Original Equipment)

This is a Genuine OEM Crankshaft Position Sensor (CKP Sensor), identified by the GM part number 55593759. This sensor is a factory-original component designed for the rugged 2.5L and 2.8L Duramax Common Rail Diesel (CRDi) engines used in the Chevrolet Colorado and Trailblazer pickup trucks and SUVs across global markets.

The CKP sensor is the foundation of the modern diesel engine management system:

Diesel Timing Synchronization: The sensor monitors the rotation of the crankshaft with extremely high precision. The ECM uses this signal as the fundamental data point to calculate the exact timing for the high-pressure fuel injection events required by the CRDi system, ensuring optimal power and fuel efficiency.
Engine Start: A failure of this sensor is a common cause of a crank-no-start condition or unexpected engine stalling in diesel vehicles.
Genuine Quality: Given the high performance and precision required by the Duramax CRDi system, using the Genuine GM Part ensures signal accuracy and durability under high engine load and temperature.
Fitment Assurance: The part number 55593759 is consistently verified as the correct genuine CKP sensor for the 2.5L / 2.8L Duramax Diesel engine in the Chevrolet Colorado models from 2014–2017.

 
Compatible Vehicle (Primary Applications - Check VIN for confirmation of 2.5L / 2.8L Duramax Diesel Engine):

Chevrolet Colorado (RG) 2.5L / 2.8L Diesel (approx. 2012–Present)
Chevrolet Trailblazer (RG) 2.5L / 2.8L Diesel
 
Part Number:

✔ 55593759 (Crankshaft Position Sensor - Genuine GM OE)
Interchangeable OE: 55581977
 
Part Type:

✔ Crankshaft Position Sensor (CKP) (Genuine Part, 2.5L / 2.8L Duramax Diesel Specific)