Section 8 (HVAC System - Automatic): Operation: Sensors: Notes
WARNING: This page is about a different car, the 1996 Buick Park Avenue and 1996 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
In-vehicle sensor, ambient (outside) air temperature sensor and solar (sunload) sensor provide basic control inputs for the system. The microprocessor uses these sensor inputs to generate command signals for the programmer.