Buick Regal oil pressure issue despite having oil, timing belt replaced on Buick Regal

Some Buick Regal owners report experiencing oil pressure issues even after having oil and the timing belt replaced, which can lead to serious engine problems such as engine seizure if not addressed promptly. These owners have noted that a malfunctioning timing chain, whether it has fallen off, broken, or jumped teeth, can prevent the engine from starting and produce unusual sounds during cranking. Additionally, persistent low oil pressure may indicate internal issues like bearing clearance problems, which could result in further complications if left unresolved. In some instances, owners have found that replacing the complete aluminum timing cover, including the oil housing, is necessary to effectively address the problem, despite the potential for costly repairs. Furthermore, it is recommended that owners inspect the cam and crank gear along with the timing chain for any signs of wear or damage to identify the root cause of the oil pressure issues.