Okay, straight from the NPS-
The 2016 schedule for the Tuolumne Hiker's shuttle is:
Beginning June 10th -September 20th, there will be only
ONE bus per day in each direction.
The shuttle from the Valley will Leave Curry Village at 8:00am, with only one other stop in the Valley at the Yosemite Lodge at 8:20. Safety permitting, and by letting the driver know when you board, all regular trailheads on Tioga Rd will still be served.
From Tuolumne Meadows, the shuttle to the Valley will now leave from the Tuolumne Lodge at 2:00pm instead of from the Visitor's Center.
The NPS and Aramark have only contracted for that one run in each direction per day. The cost will be $15 one-way, and $23 round-trip. Tickets must be purchased in-advance at the transportation kiosks.
That's it until further notice and/or Aramark gets up to speed. This sucks!!!! There are going to be lot's of people missing their ride, and the demand will probably lead to long lines and very crowded buses.
YARTS will be running weekends only from the Valley at their regular 5pm departure time until sometime in July when it will change to daily service. Stay tuned. Here's YARTS complete schedule for all routes and schedules:
http://yarts.com/routes-schedules/