Dorman 917-791 Engine Crankshaft Position Sensor

Overview of Dorman Engine Crankshaft Position Sensor 917-791

The Dorman 917-791 Engine Crankshaft Position Sensor is designed for reliable performance in Chevrolet and GMC heavy-duty trucks. This sensor is compatible with models such as the Chevrolet Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500, providing accurate engine timing data essential for optimal engine operation.

• Compatible with Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500
• Durable metal and plastic construction for long-lasting use
• Single oval-shaped female connector with three male blade terminals
• Sensor body diameter of 0.98 inches for precise fitment
• Includes one mounting hole for secure installation

Detailed Product Features and Specifications

The Dorman 917-791 crankshaft position sensor features a black and silver color scheme and is constructed from a combination of metal and plastic materials to withstand engine bay conditions. It has a single oval-shaped female connector with three male blade terminals, ensuring a secure electrical connection without the need for a wiring harness. The sensor body diameter measures 0.98 inches, and it includes one mounting hole for straightforward installation. This sensor does not come with a mounting bracket or wiring harness, so it is designed to integrate directly with the vehicle's existing components.

Function and Common Applications

This crankshaft position sensor is critical for monitoring the position and rotational speed of the crankshaft, which is essential for engine timing and fuel injection control. It is commonly used to address issues such as:

• Engine misfires or rough idling
• Difficulty starting the engine or no-start conditions
• Check engine light triggered by crankshaft sensor faults
• Poor engine performance or stalling
• Irregular or unstable engine RPM readings

Installation Notes and Tips

When installing the Dorman 917-791 sensor, ensure the engine is cool and the battery is disconnected to prevent electrical shorts. The sensor mounts using a single mounting hole and connects via the oval-shaped female connector with three male blade terminals. Verify the connector is fully seated and secure before completing installation. No additional wiring harness or mounting bracket is included, so use the vehicle’s original hardware as needed. Proper alignment and torque specifications should be followed according to the vehicle manufacturer’s guidelines.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for Chevrolet and GMC heavy-duty trucks. The 917-791 crankshaft position sensor undergoes rigorous quality control to ensure durability and accuracy. This part is backed by Dorman’s limited warranty, covering defects in material and workmanship under normal use conditions. For specific warranty details, refer to Dorman’s official documentation.