Buick Riviera won't start despite battery lights working, turns over issue on Buick Riviera

Some Buick Riviera owners report experiencing starting issues despite the battery and lights functioning properly, with the engine turning over. These problems may stem from starter malfunctions, where the starter motor operates but fails to engage the engine. Additionally, issues with the ignition switch or the Vehicle Anti-Theft System (VATS) can prevent the engine from starting, particularly if the key chip does not match the system. A faulty Idle Air Control valve may also restrict airflow necessary for starting. Furthermore, the Pass key 2 anti-theft system can disable the starter and fuel injector pulse if it fails to recognize the key, leading to starting difficulties. Electrical problems, including faulty connections, blown fuses, or poor battery connections, can also contribute to these issues, even when lights and radio are operational. Lastly, fuel system problems, such as malfunctioning fuel pumps linked to the VAT system, can hinder the starting process. Diagnosing the exact cause of these starting issues typically requires a thorough inspection of these components and systems.