Buick Park Avenue total loss of power with fuel gauge issue and decreased fuel economy on Buick Park Avenue

Some Buick Park Avenue owners report experiencing a total loss of power alongside fuel gauge issues and decreased fuel economy. Many report problems with inaccurate fuel gauges, which can lead to erratic readings and uncertainty about the actual fuel level, potentially resulting in unexpected power loss if the vehicle runs out of fuel. Additionally, some owners have encountered defects in the engine control module (ECM), causing incorrect fuel gauge readings that misrepresent the fuel in the tank, further affecting vehicle performance. Erratic voltage conditions have also been noted, impacting the fuel gauge operation and sometimes contributing to power loss if not addressed. Furthermore, a decrease in fuel efficiency has been reported, often linked to factors such as improper tire pressure, dirty air filters, faulty oxygen sensors, or malfunctioning fuel injectors. Regular maintenance and prompt attention to these issues are essential for maintaining the smooth operation of the Buick Park Avenue.