Delphi SS12455 Engine Crankshaft Position Sensor

Delphi SS12455 Crankshaft Position Sensor

Delphi SS12455 is an engine crankshaft position sensor built for accurate engine speed and crank position signal input. It is a direct-fit option for select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 applications from 2002-2004.

Key Features

• Gray sensor body with a single oval connector
• 3-pin male terminal design
• 1 mounting hole for OE-style installation
• No wiring harness included
• No mounting bracket included
• Package includes the engine crankshaft position sensor and instruction sheet
• Delphi SS12455 cross-references Standard Ignition PC399 for the same application

Product Details

This Delphi crankshaft position sensor is part of a sensor lineup developed with OE validation methods and calibrated to OE standards. The SS12455 is engineered to deliver accurate crankshaft position readings, which supports proper engine timing and signal consistency on 2002-2004 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 trucks. Delphi SS12455 is a practical replacement when the original sensor is no longer sending a stable signal.

Vehicle Fitment

• Fits 2002-2004 Chevrolet Silverado 2500 HD, N/A
• Fits 2002-2004 Chevrolet Silverado 3500, N/A
• Fits 2002-2004 GMC Sierra 2500 HD, N/A
• Fits 2002-2004 GMC Sierra 3500, N/A

Common Issues This Sensor Can Address

• Intermittent crankshaft position signal loss
• Hard starting caused by incorrect engine speed input
• Stalling related to faulty crank signal data
• Check engine light conditions tied to crankshaft sensor faults
• Rough running from inconsistent timing reference input

Installation Notes

Verify connector shape, terminal count, and mounting style before installation. This sensor uses a male 3-pin connector with an oval connector shape and one mounting hole. Compare the original part number and vehicle application before replacement, and inspect the connector and harness for damage that could affect signal quality.

Quality Assurance

Delphi validates its sensors to OE standards and tests them for accurate readings to help reduce comebacks. The SS12455 is backed by Delphi’s OE-focused sensor development and calibration process.