Sierra 1500 2WD V6-4.3L (2008)
Transmission Speed Sensor: Service and Repair
Allison - Automatic Transmission
Speed Sensor Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution .
1. Be sure the vehicle ignition is turned off.
2. Disconnect the external wiring harness from the speed sensor.
3. Remove the bolt (1) from the speed sensor and carefully remove the speed sensor (2).
Installation Procedure
Important: Do not rotate the sensor in its retaining bracket. Changing the sensor/bracket orientation may cause improper operation.
