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.
B396A 01
The liftgate control module detects a short to voltage in the liftgate motor control circuits.
B396A 02
A loss of B+ voltage to the liftgate control module or the liftgate control module detects a short to ground in the liftgate motor control circuits.
B396A 04
The liftgate control module detects an open/high resistance in the liftgate motor control circuits.