Dorman 917-797 Engine Crankshaft Position Sensor

Reliable Engine Crankshaft Position Sensor for Chevrolet and GMC

The Dorman 917-797 Engine Crankshaft Position Sensor is designed to provide accurate engine timing data for select Chevrolet and GMC trucks and SUVs. Featuring a durable metal and plastic construction with a 3-pin connector, this sensor ensures consistent performance and compatibility with your vehicle's ignition system.

• Compatible with Chevrolet Avalanche 2500, Express 3500, Suburban 2500, Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, Sierra 3500, Yukon XL 2500, and GMC Savana 3500 models
• Durable metal and plastic materials for long-lasting use
• 3-pin connector/terminal configuration for secure electrical connection
• Includes one engine crankshaft position sensor per package
• OEM-quality fit and function for reliable engine performance

Product Details and Specifications

The Dorman 917-797 crankshaft position sensor is engineered to monitor the position and rotational speed of the crankshaft, providing critical input to the engine control unit (ECU). Constructed from metal and plastic components, this sensor withstands the harsh conditions of the engine bay. The 3-pin connector ensures a stable and precise electrical connection, minimizing signal loss or interference. This sensor is specifically designed for use in various Chevrolet and GMC heavy-duty trucks and SUVs, including Avalanche 2500, Express 3500, Savana 3500, Sierra 2500 HD and Classic, Sierra 3500 and Classic, Silverado 2500 HD and Classic, Silverado 3500 and Classic, Suburban 2500, and Yukon XL 2500 models.

Common Applications and Problem Resolution

• Restores accurate engine timing and ignition control
• Resolves engine misfires and rough idling caused by faulty sensor signals
• Eliminates intermittent stalling or difficulty starting the engine
• Prevents check engine light triggers related to crankshaft position sensor faults
• Improves overall engine performance and fuel efficiency

Installation Notes and Tips

Installation of the Dorman 917-797 sensor requires basic mechanical skills and proper tools. Before installation, disconnect the vehicle battery to prevent electrical shorts. Locate the existing crankshaft position sensor on the engine block, typically near the crankshaft pulley or flywheel housing. Carefully unplug the 3-pin connector and remove the old sensor. Install the new sensor ensuring the connector is securely attached and the sensor is properly seated. After installation, clear any diagnostic trouble codes and verify sensor operation through engine diagnostics.

Quality Assurance and Warranty Information

Dorman manufactures the 917-797 crankshaft position sensor to meet or exceed OEM specifications, ensuring reliable performance and durability. Each sensor undergoes rigorous quality control testing to verify fitment and function. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in your replacement part.