Conditions for Setting the DTC
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
B153B 02
The liftgate control module detects a short to ground in the full open switch signal circuit.
B153B 05
The liftgate control module detects an open/high resistance in the full open switch signal circuit or the liftgate full open low reference circuit.