Buick Riviera car turns off and battery dies after 30 minutes of being off even after new battery installation on Buick Riviera

Some Buick Riviera owners report experiencing persistent battery drain issues, even after installing a new battery. This problem may stem from a parasitic drain caused by a failed diode in the alternator or other electrical components that continue to draw power when the engine is off. Additionally, owners have noted that certain accessories, such as car alarms or GPS systems, can contribute to ongoing power consumption, leading to a dead battery if the vehicle is left unused for an extended period. In some cases, the new battery may also be unable to hold a charge, indicating a potential fault with the battery itself. To accurately diagnose the issue, it is recommended that owners have a professional conduct a battery test to identify any underlying electrical problems.