Q: How do you remove the pressure sensor on Saturn LS and LS1?
A: Unplug the electrical connector from the HVAC pressure switch and unscrew the HVAC pressure switch from the refrigerant line. Use a backup wrench to prevent damaging the refrigerant line. Lubricate the switch o-ring with mineral oil. Screw the new switch onto the refrigerant line until hand tight, then tighten it securely. Finally, reconnect the electrical connector.