to take off the original blades just use a screwdriver to pry them off. Place the screwdriver between the blade and the attachment arm right at the pin and twist to prey off. The replacement 18" blades should then just snap on.
You take it to autozone and they will show you
Raise the wiper blade and hold. Pull the release on the bottom of the blade and wiggle it off.
stick the wiper blade up your hole - I can't figure it out either.
Replace wiper blade and carefully bend wiper arm so it makes good contact with windshield
See Windshield Wiper Blade Replacement on page 6-40 of your "Owner's Manual", under Section 6: Service and Appearance Care.....
The 1999 Buick Century take 22" wiper blades on both sides front. See related link below. Always lookup exact part numbers for the brand of wiper blade you decide to purchase by vehicle make, model and year which ensures not only the correct lengths, but the correct attachments. Not all wipers of a given length fit all wiper arms.
are you serious... life blade off windshield, unclip plastic fastener off the center of the wiper arm, remove wiper, replace in reverse order.
wipers wiper blade windshield wipers
Razor blade
There is a tab you pull up on located at the top of the blade. When you pull it up the wiper should be able to slide off the wiper arm pin, replace with a universial blade.
PULL THE WIPER ARM UP AND ON THE BOTTOM OF THE BLADE YOU WILL SEE A LITTLE PUSH TAB, PUSH THE TAB AND PULL THE BLADE DOWN! GOOD LUCK
Turn the wiper switch to the on position. Turn the key on and as soon as the wipers go straight up then turn them off. That will make it easier to remove the blade. Lift the wiper away from the windshield while pulling down. Be sure to not let the wiper fall against the windshield. Push the new one in place and you are done.