Circuit/System Description
WARNING: This page is about a different car, the 2007 Saturn Outlook. However, it is still accessible from the selected car via links, so may be relevant.
When calibrating the liftgate position, the power liftgate control module (PLGM) is placed in a functional state to learn the liftgate travel limits. DTC B1019 will set automatically as an indicator that the system is in learn mode and not as a fault indicator. Once the travel limits are learned by the PLGM, the PLGM will exit calibration mode and DTC B1019 will clear. If the PLGM does not exit learn mode, DTC B1019 will remain current and indicate a fault.