2013 Chevrolet Tahoe Owner Manual - Page 254

8-8 Climate Controls Sensors 1 (Rear Window Defogger): Press to turn the rear window defogger on or off. It automatically turns off several minutes after it has been activated. The defogger can also be turned off by turning off the engine. Do not drive the vehicle until all the windows are clear. Notice: Do not use a razor blade or sharp object to clear the inside rear window. Do not adhere anything to the defogger grid lines in the rear glass. These actions may damage the rear defogger. Repairs would not be covered by your warranty. Heated Mirrors: Press 1 to help clear fog or frost from the surface of the outside mirror. See Power Mirrors on page 2‑16. The solar sensor, located in the defrost grille in the middle of the instrument panel, monitors the solar heat. Do not cover the solar sensor or the system will not work properly. The interior temperature sensors located in the headliner above the driver side seat and if equipped, in the headliner above the second row seats measure the temperature of the air inside the vehicle.