Dorman Automatic Transmission Speed Sensor — Direct-Fit Replacement (917-602) Restores Accurate Speed Signal

The Dorman 917-602 is a direct-fit automatic transmission speed sensor designed to restore accurate speed signal output and proper transmission-dependent functions.

This replacement speed sensor is manufactured to match the original equipment's fit and signal characteristics so the transmission control system, speedometer and related drivability features receive correct input. Dorman engineers test each unit for fit, electrical output and mechanical durability to help ensure consistent performance after installation. If your vehicle exhibits speedometer errors, shifting issues, or trouble codes tied to speed sensing, this sensor provides a straightforward way to bring the system back in specification.

How does this sensor affect shifting and drivability?

Automatic transmissions rely on accurate rotational speed information to command shift timing and line pressure. A failing speed sensor can cause late, harsh or incorrect shifts and may set transmission-related diagnostic trouble codes.

• Restores accurate speed signal to the transmission control module
• Reduces erratic or delayed shift events caused by incorrect inputs
• Helps clear speed-related fault codes when the underlying sensor fault is replaced

Will it fit my vehicle and how easy is installation?

This Dorman unit is built as a direct replacement using the vehicle's original mounting and connector interface so installation is typically straightforward. Use your vehicle's make, model and trim in the fitment tool to confirm compatibility before purchasing.

• Direct-fit design uses original hardware and factory connector
• No specialized wiring or adapters required for matched applications
• Installation generally involves unbolting the old sensor and plugging in the new one

What quality checks has the sensor undergone?

Dorman subjects this speed sensor to try-on validation and quality testing to verify mechanical fit and electrical signal consistency. These checks are intended to ensure long-term, stable output comparable to the original component.

• Try-on validation confirms correct physical fitment and positioning
• Electrical testing verifies accurate signal waveform and voltage parameters
• Durability evaluations assess material and connector longevity under normal operating conditions

How will replacing this part impact vehicle systems like the speedometer?

Replacing a degraded speed sensor with a properly functioning unit helps restore correct vehicle speed readings and can remove related dashboard warnings. Accurate speed input also benefits systems that depend on speed data, such as cruise control and ABS in some system architectures.

• Helps correct speedometer and odometer readings when sensor error was the cause
• May resolve cruise control and related subsystem anomalies tied to speed input
• Supports cleaner diagnostic results by eliminating sensor-sourced error codes

Who is this for: The Dorman 917-602 Automatic Transmission Speed Sensor is intended for vehicle owners, mechanics and fleet technicians seeking a reliable, direct-replacement sensor that mirrors the original equipment's fit and signal behavior. It suits anyone diagnosing transmission or speed-related faults who wants an OE-style part that installs with existing hardware and wiring. Before ordering, confirm fitment with your specific make, model and trim using the vehicle selector to ensure compatibility and a smooth installation.