The AC low side port on a 1999 Cadillac DeVille is against the firewall. It is on the larger of the two hoses going to the AC compressor.
On the suction side only if you are just using a do it yourself kit........ The low side service port is on the suction side (larger hose) and the high side service port is on the discharge hose (smaller hose)......
The low side service port is located on the suction line at the top of the engine.....
You add refrigerant through the low side service port.
The EVAP Service port is on the firewall on the passenger side, right next to the low side service port for the A/C.
The low side service port can be found on top of the air conditioner compressor. The low side service port will have a blue top.
The low side service port on your 1993 Mitsubishi Eclipse can be found on top of the air conditioner compressor. The low side service port will be labeled as the low pressure port.
Take off your rear seat, the service port will be on the left side of the car.
If you are looking for the place to put the freon, it is the port closest to the front of the grill.....Left hand side.
The smaller port is the low side.
IF U look @ the Condenser & find the line that coemes from the top of IT-THATS NOT THE LOW Pressure-Trace the other line @ the bottom of the Condenser & U will find the LOW port.
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.