How to open and close Buick gl8 rear window?

Buick gl8 rear window switch: 1. Press the button to activate the rear window lock, and the indicator light will light up. 2. Press the rear window lock button again, and it will be disabled. The switch on the driver's door can control all the windows. Each passenger door switch can only control its own window. Power windows can only be opened and closed when the ignition switch is turned to the position of engine start, accessory power supply or accessory power supply mode. Press the switch to lower the window, and pull the switch to raise the window.