Circuit/System Description

WARNING: This page is about a different car, the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 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.