2001 Chevrolet Corvette Owner's Manual - Page 187

Operating the system in the recirculation mode may cause fogging of the vehicle's windows when the weather is cold and damp. To clear the fog, switch the system to either the DEFOG or DEFROST mode and increase the fan speed. To avoid re-fogging of the windows, operate the system in the OUTSIDE AIR mode. FRONT: Press the FRONT defrost button to quickly remove fog or frost from the windshield. This setting directs most of the airflow to the windshield and a small amount toward the lower and side window outlets. The light on the button will come on and the digital display will show the defrost mode symbol and fan speed when the front defrost mode is being used. Pressing FRONT defrost again will return the system to the last operating mode and the air intake mode will be in OUTSIDE AIR. If the system is in FRONT defrost when you shut the engine off, it will restart in FRONT defrost unless the engine is off for longer than 40 minutes. If the engine is off longer than 40 minutes, the system will restart in the operating mode you had set prior to FRONT defrost and the air intake mode will be in OUTSIDE AIR. See "Rear Window Defogger" later in this section for more information. Sensors The automatic electronic dual climate control system uses several sensors to control operation and display information. Solar Load Sensor This sensor is located on the top right side of the defroster grille. The defroster grille is on the top of the instrument panel. The sensor monitors the sun's solar radiation and uses this information as part of the automatic climate control system when operating in the AUTO mode. Be careful not to put anything over the sensor. When covered, the sensor cannot compensate for changes in the amount of heat the vehicle is absorbing from the sun. 3-9