C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
Transmission Speed Sensor: Service and Repair
Allison - Automatic Transmission
Speed Sensor Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Service Precautions.
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.
1. Install a new a O-ring (3) on the speed sensor (2). Lubricate the O-ring with clean transmission fluid.
2. Install the new speed sensor (2) into the speed sensor bore. Align the hole in the retaining bracket with the bolt hole in the speed sensor boss.
Notice: Refer to Fastener Notice in Service Precautions.
3. Install the speed sensor bolt (1).
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Tighten bolt (1) to 12 Nm (108 inch lbs.).
4. Reconnect the external wiring harness to the speed sensor.
