Circuit/System Testing
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.
Perform the Liftgate Calibration . The K39 liftgate control module should learn the travel limits, exit the calibration mode, and B1019 00 will become a history code.