Pull the vehicle speed sensor out of it's hole.

Be careful to not bump too many parts while removing the sensor, as you may knock debris into the transmission which can cause premature wear or failure.

To avoid the risk of damaging the wiring harness, do not pull the sensor by its wires.

Disconnect the sensor from the wiring harness by pressing the grey tab on top of the harness connector and pulling the connector and sensor away from each other.

Remove the sensor from the engine bay.

When installing the new vehicle speed sensor, be careful not to knock debris into the transmission, as the area around its hole is likely very dirty.