hi the passenger side of my Regal window switch doesn't work when pressed. Fortunately the drivers side control allows the window to open/close.

The main lock/unlock switch on the drivers panel broke off so i think it might be in lock mode, but am not sure. Is there a way to get a new master switch button for the window? (That little black piece that reads "lock/unlock")?

Any ideas/suggestions are appreciated

The window lock-out switch is part of the master switch, it cannot be replaced on it's own.