How do you add freon in a 98 Buick Lesabre?

To add freon to a 1998 Buick LeSabre, first locate the low-pressure service port on the AC system, typically found near the accumulator or on the larger line. Make sure the AC is running in the maximum cool setting. Attach the refrigerant can to the low-pressure port and follow the manufacturer's instructions to add freon, ensuring you don’t overfill. Always wear safety goggles and gloves during the process to protect against any refrigerant exposure.