Conditions for Setting the DTC
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.
B0785 01
The TCCM detects 3.4 V or greater on the 2 High indicator control circuit when the 2 High indicator is commanded ON.
B0785 06
The TCCM detects 1.6 V or less for 1.5 seconds on the 2 High indicator control circuit when the 2 High indicator is commanded OFF.