1995 Cadillac DeVille Owner's Manual - Page 174

controller allows the Can to gradually incrcase to a higher speed. This prevcnts cold air from blowing into the passenger compartment. If \ / o u want the blowcr fan to run only at a k e d high speed, press the (upper) buttonuntil you sce HI on the display. If you want the fan speed t o be automatic, but vou like the fan speed to be higher than the AUTO setting. just press the fan button until HI/AUTO is shown on thc display. I f you w a n t the blowcr t o ~ L I Ionly a t a fixed l o w speed, press the (lower) I huttot1 until LO is shown on the display. L Press this button to removc fog or frost from the windshield. This setting sendsmost o f the airflow t o the windshield w i t h only a small amount to the floor outlets. The fan speed will work automatically t o maintain vour rsqussted interior to temperature. If you need more air directed yourbindshield, you should select a higher fan speed. in some cold start conditions,the AUTO blower fan speed may be limited until the engine cooling system warms up. Thisis normal to prevent windshield fogging. It will help if you first clear any ice and snow from the hood and the air inlet (it's between the hood and the windshield).