Where is the low pressure port for a 98 Chevy lumina you can find it on other cars but not this one?

The low-pressure port on a 1998 Chevy Lumina's A/C system is typically located on the accumulator/receiver drier. However, its exact location on *that* component can vary slightly depending on the specific model and the A/C system manufacturer.

Unlike some cars with a readily accessible low-pressure port on a different component, the Lumina frequently has it integrated into the accumulator/receiver drier. This means you'll need to locate the accumulator/receiver drier itself first, which is usually near the firewall, on the passenger side. It's a cylindrical component with various fittings. The low-pressure port will be one of them, and it's usually smaller than the high-pressure port. It might have a cap or be readily visible.

If you can't easily identify it:

* Consult a repair manual specific to your 1998 Chevy Lumina: This is the best resource. The diagrams will show the exact location.

* Use a schematic or diagram: Many online auto parts stores (like AutoZone, Advance Auto Parts) have diagrams available if you input your vehicle's details.

* Take it to a professional: A qualified mechanic will know exactly where to find it. Attempting to work on the A/C system without proper knowledge can be dangerous due to refrigerant handling.

Remember to always wear safety glasses when working with automotive refrigerant.