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Possible Causes

Possible Causes
(T13) SPEED SENSOR GROUND CIRCUIT OPEN
(T13) SPEED SENSOR GROUND CIRCUIT SHORTED TO GROUND
(T13) SPEED SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting Procedure before proceeding. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .