1993 Cadillac Seville Owner's Manual - Page 166

Rear Seat Air Outlet Move the switch to adjust the blower speed from"LO" to "HI." Move the "VENT" lever to direct air flow from either the upper or floor outlets. Heated Windshield (Option) Front De-Ice Here's how to use your heated windshield in cold weather to remove ice or frost quickly: 1. If any snow ispiled up on the windshield, brush it away. 2. Start your Cadillac and leave it in P ("Park"). 3. Push the switch. A light will come on to you it is working. tell 152