Buick Terraza passenger power door alarm continuously activates while driving on Buick Terraza

Some Buick Terraza owners report experiencing issues with the passenger power door alarm continuously activating while driving, which can be quite bothersome. These owners have noted that the alarm may ding incessantly until the vehicle is stopped and the power button is used to open and close the door, even when the door is securely closed. Additionally, some users have encountered the alarm chiming as if the door is open while driving. In certain instances, pressing the Door Close button during the beeping can cause the door to attempt to engage again. Furthermore, the automatic sliding doors have been reported to open erratically, even when locked, and may do so while driving despite previous repairs. There have also been reports of the antitheft alarm engaging unexpectedly, potentially leading to the vehicle shutting off while in motion, with issues like a detached steering wiring cable identified as possible causes. To mitigate these issues, owners are advised to check for sensor malfunctions or wiring problems, ensure the door is fully closed, and consult a qualified mechanic for further diagnosis and repair.