Mac OS 10.8.4, latest version of Premiere Pro CC, all updates applied. The 'Go to Gap' keyboard shortcuts are missing. They should be, according to the manual, Shfit or Option ; by default. Is this just my version?
Type in: next in sequence or previous in seqeunce in the keyboard shortcuts.
You can also view the shortcuts when you select next/previous in sequence in the pull down menu Sequence/Go to Gap.