Walker 235-1621 Engine Camshaft Position Sensor

Walker 235-1621 Camshaft Position Sensor

Walker Products 235-1621 is an engine camshaft position sensor for select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 applications. It is built for direct replacement service where accurate camshaft signal input is needed for engine management and drivability.

Key Features

• Engine camshaft position sensor for ignition and engine management systems
• Fits 2004-2005 Chevrolet Silverado 2500 HD and Silverado 3500
• Fits 2004-2005 GMC Sierra 2500 HD and Sierra 3500
• Walker Products part number 235-1621 for catalog and service matching
• Cross-references Standard Ignition PC617 and Spectra Premium S10545 for the same application

Product Details

This camshaft position sensor helps the engine control system monitor camshaft position so the ECU can manage ignition timing and fuel delivery more accurately. Walker Products has supplied fuel system and engine sensor components since 1946 and manufactures to meet or exceed OEM standards and specifications. The Walker Products line includes engine management components such as cam and crankshaft sensors, throttle position sensors, oxygen sensors, fuel injectors, spark plug wires, and gaskets, supported by engineering and technical resources.

For buyers searching for a 2004-2005 Chevrolet Silverado 2500 HD camshaft position sensor or a 2004-2005 GMC Sierra 3500 camshaft position sensor, part number 235-1621 provides a direct-fit service option for the listed vehicles.

Common Issues This Part May Address

• Hard starting or extended crank time related to cam signal loss
• Intermittent stalling or rough engine operation
• Check engine light triggered by camshaft position sensor faults
• Misfire or timing-related drivability concerns
• Loss of synchronization between camshaft and engine control inputs

Installation Notes and Tips

Verify the vehicle year, make, and model against the fitment list before ordering. Inspect the sensor connector, wiring, and mounting area during replacement, and clear diagnostic trouble codes after installation if required by the repair procedure. Confirm the original sensor style and application match Walker Products 235-1621 before service.

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer focused on producing engine sensors and fuel system components to OEM-level standards and specifications. Their product support includes application data, instruction sheets, and technical assistance for aftermarket service.