What cause check engine light to flash on 1999 Pontiac grand prix gtp?

A flashing check engine light on a 1999 Pontiac Grand Prix GTP typically indicates a serious issue, often related to misfire or engine performance problems. Common causes include faulty spark plugs, ignition coils, or fuel delivery issues. It’s important to address this promptly, as continued driving can lead to further engine damage. Using an OBD-II scanner can help identify the specific trouble codes for more precise diagnosis.