What is proper spark plug firing sequence for 1988 Buick Park Avenue?

The proper spark plug firing order for a 1988 Buick Park Avenue with a V6 engine is 1-6-5-4-3-2. The spark plugs should be connected to their respective ignition coils in this sequence to ensure the engine runs smoothly. Additionally, the cylinder numbering starts from the front of the engine, with cylinder 1 on the driver's side. For accurate installation, refer to the vehicle's service manual for specific details and diagrams.