In this segment, I will explain how to remove the wiper blade holder from the wiper arm. The arm is the part that is connected at one end to the wiper pivot, just below the lower edge of the windshield. The arm shown is a Trico brand arm that is typically used on General Motors cars of the 1950's and 1960's. In the first picture, you will see the blade holder as it is attached to the windshield wiper arm. In picture two, you will see how to remove the blade holder from the arm, by lifting the tab with a flat blade screwdriver, and sliding the blade holder off the arm. In the third picture, you can see the locking tab that holds the blade holder to the arm.