REMOVAL & INSTALLATION
See Figure 1
The speed sensor is not serviceable and be must replaced if malfunctioning. The sensor is usually located in the left rear of the transmission case on 2WD vehicles and on the transfer case of 4WD vehicles.
The speed sensor may be tested with an ohmmeter; the correct resistance is normally 900-2000 ohms. To remove the speed sensor:
- Disconnect the negative battery cable.
- Raise and support the vehicle safely on jackstands.
- Disengage the electrical harness from the speed sensor.
- If equipped, remove the sensor retaining bolt.
- Place a drip pan below the sensor to catch any spilled fluid. Remove the speed sensor.
If equipped with the 4L30-E automatic transmission, use J-38417 or an equivalent speed sensor remover/installer tool whenever the sensor is serviced.
- Remove the O-ring used to seal the sensor. Discard the O-ring.
- Coat the new O-ring with a thin film of transmission fluid.
- Install the O-ring and speed sensor.
- If a retaining bolt is used, tighten the bolt to 97 inch lbs. (11 Nm) in automatic transmissions or 107 inch lbs. (12 Nm) for manual transmissions.
- If the sensor is a screw-in unit, tighten it to 32 ft. lbs. (43 Nm).
- Engage the wire harness to the sensor.
- Remove the jackstands and carefully lower the vehicle.