4L60-E/4L65-E Automatic Transmission

Vehicle Speed Sensor (VSS) Replacement

Removal Procedure





1. Raise the vehicle. Refer to Vehicle Lifting.
2. Place a drain pan under the vehicle.
3. Remove the electrical connector from the sensor.
4. Remove the bolt (2).
5. Using a twisting and pulling motion, remove the vehicle speed sensor (1) from the case.
6. Remove and discard the O-ring seal (3).

Installation Procedure





1. Install the new O-ring seal (3) on the vehicle speed sensor (1).
2. Coat the O-ring seal (3) with clean transmission fluid.
3. Install the vehicle speed sensor (1) into the transmission case.

4. Notice: Refer to Fastener Notice in Service Precautions.

Install the bolt (2).
^ Tighten the bolt to 11 Nm (97 inch lbs.).
5. Connect the wiring harness electrical connector to the vehicle speed sensor.
6. Remove the drain pan.
7. Lower the vehicle.
8. Fill the transmission to the proper level with DEXRON III transmission fluid.