Originally Posted by
mthoodfan
Yes, the shuttle still exists. It runs between Gates 65A (in Terminal 6) and 44 (in Terminal 4) -- you'll need some documentation to show that you're booked on an AA flight.
For an actual boarding pass, you could just go to the AA Gate in LAX to have it issued -- although alternatively, you could try to check in online at aa.com (using AA's PNR) to see whether it will give you the AA boarding pass. Accessing your reservation this way should also give you a chance to put your Global Entry information into the AA portion of the reservation.
If you have not had the 'privilege' of boarding a flight in T4 before this be aware that the space is quite congested and the food service is extremely limited. No reading material or sundries either so stock up before you jump on the bus.