DTC P1BAE Chevrolet

Cause and Solution

The TCCM monitors the front differential lock high control circuit, and the front differential low reference circuit, for high and low voltage.The TCCM detects a high voltage when a low voltage is expected, or a low voltage when a high voltage is expected, on either the front differential lock high control circuit or the front differential low reference circuit.Fault must be present for 1 minute.