Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
B396F 06
The LGM detects a short to ground or an open/high resistance in the liftglass ajar signal circuit.
B396F 0B
The LGM detects a short to voltage in the liftglass ajar signal circuit.