The Vehicle Speed Sensor (VSS) is a magnetic pick-up that sends a signal to the Powertrain Control Module (PCM). The sensor measures the rotation of the transmission and the PCM determines the corresponding vehicle speed.
Removal & Installation
The VSS is located half-way down the right-hand side of the transmission assembly.
- Apply parking brake, block the rear wheels, then raise and safely support the front of the vehicle on jack stands.
- From under the right-hand side of the vehicle, disengage the wiring harness connector from the VSS.
- Loosen the VSS hold-down bolt, then pull the VSS out of the transmission housing.
- If a new sensor is being installed, transfer the driven gear retainer and gear to the new sensor.
- Ensure that the O-ring is properly seated in the VSS housing.
- For ease of assembly, engage the wiring harness connector to the VSS, then insert the VSS into the transmission assembly.
- Install and tighten the VSS hold-down bolt to 62-88 in lbs.
- Lower the vehicle and remove the wheel blocks.
- Remove the VSS
- Using a low voltage voltmeter, measure the voltage between two terminals of the VSS while rotating the driven gear by hand. Voltmeter needle should move below 5 volts.
- If the voltmeter needle moves, check wiring and/or connectors and repair/replace as necessary.
If the voltmeter needle does not move, replace the VSS.