Dorman Transmission Speed Sensor 917-602 — OE-Fit Automatic Replacement for Accurate Shift & Speed Readings

The Dorman 917-602 Automatic Transmission Speed Sensor is an OE-fit replacement that restores accurate vehicle speed signals for transmission and speed-dependent systems.

This direct-replacement sensor is engineered to match the original equipment’s form and function so your vehicle’s transmission control, speedometer input and related systems receive precise speed data. Built to strict tolerances and tested for reliable signal output, the unit installs using the vehicle’s existing mounting hardware and connector to minimize fuss during replacement.

How does this sensor affect my vehicle’s shifting and speed readings?

The transmission speed sensor provides the control module with real-time speed information used for shift timing and speedometer operation. A failing sensor can cause erratic shifting, delayed engagement or inaccurate speed displays, so restoring a correct signal helps return drivability to normal.

• Delivers accurate pulse signals to the transmission control unit
• Helps the ECU determine shift points and torque converter lockup
• Supports accurate speedometer and cruise control inputs

Is the Dorman 917-602 easy to install by a DIYer?

Yes — the part is designed for a straightforward swap using the vehicle’s original hardware and wiring connector. Basic hand tools are typically sufficient, and the plug-and-play electrical connector eliminates the need for splicing or special adapters.

• Fits into the original mounting location without modification
• Uses the factory electrical connector for fast installation
• Simple bolt-on replacement that saves shop time and complexity

What quality checks ensure the sensor will perform reliably?

Each sensor undergoes fit verification and rigorous performance testing to ensure consistent signal output and long-term durability. The construction follows precise engineering tolerances to replicate the original component’s behavior under normal driving conditions.

• Try-on validation confirms correct fitment for designated vehicles
• Signal output testing verifies accurate pulse generation
• Durable materials and manufacturing controls help extend service life

How can I confirm this sensor fits my specific vehicle?

To guarantee compatibility, use the seller’s vehicle fitment tool and input your car’s make, model and trim details before ordering. Fitment checks prevent returns and ensure the sensor mounts correctly and communicates with your vehicle’s wiring harness.

• Enter year, make and model into the garage tool for a match
• Compare the OEM part number when available to confirm fit
• Contact technical support with vehicle details for any questions

Who is this for: Drivers and mechanics replacing a faulty speed sensor who want an affordable, OE-fit solution that restores proper transmission shift behavior and accurate speed signal inputs. It’s suitable for DIY installers and professional shops seeking a quality-tested replacement that installs with original hardware and the factory connector.