Its on the suction (low) side hose coming from the accumulator going to the evaporator...
The low side service port for the AC on a 2001 Alero is located on the hose that runs from the accumulator to the compressor. It is the larger of the two hoses coming off the compressor.
The 2002 Chevy Cavalier low side service port can be found on the top of the air conditioner compressor. The low side service port will be labeled as the low pressure port.
On a 2002 Saturn SL1, the low side service port for the air conditioning system is located on the accumulator, which is situated on the passenger side of the engine compartment, near the firewall. The port is typically marked with a blue cap and is smaller than the high side service port. To service the system, ensure the engine is off and the AC is not running before connecting any gauges or refrigerant.
the low side port is located in back of the engine on the pass. side just below the fire wall. It is on the narrow matte silver tube against the firewall, it has a blue cap.
You add the refrigerant through the low side service port.
The low side AC service port on a 2002 Subaru Outback is located on the passenger side of the engine compartment. It is typically found near the firewall, on the larger diameter aluminum line that runs from the evaporator to the compressor. The port is usually capped with a plastic or metal cover, which needs to be removed to access the service port for recharging or servicing the AC system.
look right by the compressor and condenser
on my 04 alero when you open the hood looking all the way to left sort of under the drive belts there is a blue cap on a wide tube. that is where mine is. it is difficult to recharge yourself....
On a 2002 Ford F-150, the low side AC port is typically located on the accumulator, which is situated on the passenger side of the engine bay, near the firewall. It is a smaller port compared to the high side port and is usually connected to a larger diameter aluminum line. Look for a service port with a plastic cap that is often marked with an "L" for low side.
The A/C low side service port is by the Firewall, just below the Passenger's Side Windshield Wiper Arm.....
should be under the dash board on driver's side
The AC service port for a 2002 Oldsmobile Bravada is located on the low-pressure side of the AC system. You can find it near the accumulator, which is situated on the driver's side of the engine compartment. The service port is typically identified by a larger cap, and it is usually blue or black. Be sure to use the correct fittings and tools when servicing the AC system to prevent damage.