1999 Cadillac DeVille Owner's Manual - Page 311

yellowblue Windshield Wiper Blade Replacement Windshield wiper blades should be inspected at least twice a year for wear or cracking. See "Wiper Blade Check" in the Maintenance Schedule booklet under Part B "Owner Checks and Services" for more information. It's a good idea to clean or replace the wiper blade assembly on a regular basis or when worn. For proper windshield wiper blade length and type, see "Normal Maintenance Replacement Parts" in the Index To replace the wiper blade assembly: 4. Replace the bulb by pressing and turning it counterclockwise. 5. Once you have installed the new bulb and socket into the lamp housing, insert the tab on the lower portion of the lamp housing first, then gently fit the rest of the housing in place. 1. Turn the ignition to ACCESSORY and turn the wipers on. Position the wipers on the windshield in the "mid" wipe position. Then with the door open, turn the ignition to OFF. 6-41