"I called AAA, but they said that they couldn't do anything for me since they couldn't get a truck up the hill to me."
Are you sure they knew the size of your rig? I've been up there before and I don't understand why a tow truck couldn't make it. Maybe they just didn't want to, had better things to do, or, thought their truck was too small to handle your rig.
For your transmission, YES, . . . . they do that. If it will still engage in drive, top it off with the proper ATF and hope for the best. You'll know very soon if everything is OK or if the transmission is coming out. Expect the trip down the mountain to do the same thing, but, to your brakes.
Chum lee
