Transmission Speed Sensor: Service and Repair

4R70E/4R75E Automatic Transmission
Speed Sensors

Speed Sensors:

NOTE: Only remove the affected sensor.

Removal
All vehicles
1. With the vehicle in NEUTRAL, position it on a hoist,

OSS sensor
2. Disconnect the output shaft speed (OSS) sensor electrical connector.
3. Remove the OSS sensor bolt.
4. Remove the OSS sensor.

TSS sensor
5. Disconnect the turbine shaft speed (TSS) sensor electrical connector.
6. Remove the TSS sensor bolt.
7. Remove the TSS sensor.

Installation
TSS sensor
1. Lubricate the O-ring seal and install the TSS sensor.
2. Install the TSS sensor bolt.
^ Tighten to 11 Nm (8 ft. lbs.).
3. Connect the TSS sensor electrical connector.

OSS sensor
4. Lubricate the O-ring seal and install the OSS sensor.
5. Install the OSS sensor bolt.
^ Tighten to 12 Nm (9 ft. lbs.).
6. Connect the OSS sensor electrical connector.