Where is the low-side air conditioning port on a 2002 Buick Century?

The low-side AC port on a 2002 Buick Century is typically located on the compressor, which is usually found on the passenger side (right side) of the engine compartment. However, the exact location can vary slightly depending on specific engine configuration and accessories. It's a smaller port compared to the high-side port.

To be certain:

* Consult a repair manual specific to your 2002 Buick Century. This will provide diagrams and precise locations.

* Look carefully around the AC compressor. The low-side port is usually near the compressor's suction line. It will have a smaller fitting than the high-side port.

Caution: Working with refrigerant requires special equipment and knowledge. Improper handling can result in injury or damage to the system. If you are not experienced in automotive AC work, it is best to take your vehicle to a qualified mechanic.