I found 3:30 pm Speed TV (not on Speed's site) by doing a search for the Red Bull US Grand Prix on TV. http://www.racingone.com/race.aspx?raceid=5026&seriesId=22&subID=45
I also noticed when watching the AMA Superbike round at Elkhart Lake, 5 pm Sunday, FOX. Qualifying, Sat, Speed, 10 pm.