Where is the chevy sonic ac low pressure port?

The low pressure port on Your Chevrolet Sonic is typically going to be located in the line that snakes from the compressor through the evaporator and up to the condensor on the suction side of the system. If You suspect Your system is low on freon, it's pretty easy to add refrigerant. Symptoms that You need to do this will include Your air conditioner blowing hot hair, or air that's cold and then turns hot. It may also give cold sometimes and no air otherwise, juSTStopping when You've turned it on.