Circuit/System Testing
WARNING: This page is about a different car, the 2011 GMC Acadia, 2011 Chevrolet Traverse, and 2011 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Liftgate Calibration . The liftgate module should learn the travel limits, exit the calibration mode, and B1019 00 will become a history code.