The outdoor air temperature sensor for a 2000 Pontiac Grand Prix is located in front of the radiator, just behind the front grill. It is on the right side of the radiator, mounted to the radiator’s incoming air duct or below the air inlets.
The outdoor air temperature sensor serves two purposes on a 2000 Pontiac Grand Prix. It prevents the air conditioner compressor from engaging when the outdoor temperature reaches 38 degrees Fahrenheit and below and controls the temperature and blower speeds in the vehicle’s heating and air conditioner systems. It also allows the owner of a vehicle equipped with automatic climate control to set a comfortable cabin temperature that the vehicle maintains all year by comparing the difference in temperature is registered by the outdoor and cabin air temperature sensors. The vehicle displays the outdoor temperature detected by the sensor on a display located just beneath the radio.