Circuit/System Description

WARNING: This page is about a different car, the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

This is an internal fault detection of the transfer case shift control module (TCCM). No external circuits are involved.
This DTC is set anytime a TCCM is replaced or reprogrammed.
The automatic transfer case (ATC) motor learn procedure must be performed to erase this DTC. The motor learn procedure allows the module to learn where the shift rails are located.