Front Defrost Mode
WARNING: This page is about a different car, the 1998 Cadillac Eldorado and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
Air flows through defroster outlets with bleed to heater outlets. If outside air temperature is less than 25°F (-4°C), ACM will limit blower to 7 volts until coolant temperature has exceeded 97°F (36°C) for 3 minutes. Selecting blower HI setting will override 7-volt limit.