Where is the ac port for a 99 Buick park avenue?

The A/C port for a 1999 Buick Park Avenue is located on the low-pressure side of the air conditioning system. You can find it near the accumulator, typically on the driver's side of the engine bay. It is usually a larger port with a plastic cap that can be identified by its smaller size compared to the high-pressure port. Always consult your vehicle's service manual for precise locations and safety guidelines.