Q: How to remove and install a low-pressure switch and pressure sensor in an air conditioning system on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?
A: To remove the low-pressure switch, start by unplugging the electrical connector and then unscrewing the switch. For installation, screw the new switch onto the threads until hand tight and then tighten it securely before reconnecting the electrical connector. To remove the pressure sensor, unplug the electrical connector from the sensor near the air conditioning compressor and then remove the sensor from the air conditioning line fitting while holding the fitting using an open-end wrench to prevent deforming the pressure line. For installation, install the pressure sensor and then tighten it securely.