Maybe I'm wrong, but why wouldn't the guys in the OnStar video just use the NAV system, which from what I could tell, is clearly shown. Funny!
http://www.onstar.com/web/portal/tbtnav?cmp=EM_SOB_W3_tbt_b_OCTOBER&audience=A1B8C3D5E2G2&vin=2CTALUEC2B6232314&sid=1509341565&accountNo=012-7383-679#
Select "Watch Video" once you're on the page.
http://www.onstar.com/web/portal/tbtnav?cmp=EM_SOB_W3_tbt_b_OCTOBER&audience=A1B8C3D5E2G2&vin=2CTALUEC2B6232314&sid=1509341565&accountNo=012-7383-679#
Select "Watch Video" once you're on the page.