Where is the low pressure ac port on a 2004 Pontiac gto?

The low-pressure AC port on a 2004 Pontiac GTO is located on the accumulator, which is situated on the passenger side of the engine bay, near the firewall. It is typically a smaller port compared to the high-pressure port and may have a blue or black cap. To access it, you may need to move some components or wiring out of the way for better visibility. Always ensure the system is off and properly depressurized before attempting to service the AC system.