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Convertible Window Operation

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

All power windows can be commanded by the driver window switch, the passenger window switch only controls its respective window, the rear power windows do not have local rear window switches. The driver window switch contains the master power window switches that commands the rear power window operations. When the left rear or right rear switch is activated to a desired position, driver window switch will send a serial data message to the BCM to command the desired rear window.

All the window motors may be commanded to express up and down by using the global window switch, the BCM will also all windows to globally express down while lowering the convertible top.