Circuit/System Description

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. 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 transfer case shift control module (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.