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Here is a TSB that shows more detail and make sure you follow it closely as it might have been your root cause.
SLIDING POWER WINDOW (BACK GLASS) SERVICE PROCEDURE
FORD:2004-2007 F-Super Duty
ISSUESome 2004-2007 F-Super Duty vehicles, equipped with a power sliding rear window (back glass), may exhibit a stuck or binding concern. This condition may be due to the center glass not being positioned correctly inside the upper or lower channel, the channel being warped, bent, or center glass de-bonded.
ACTIONFollow the Service Procedure steps to correct the condition. Print it out on first viewing as it might time out.