Here's a good way to set up the TV cable (this worked better for me than the service manual way. I got these directions from one of the fine transmission experts on this board):
(You will need 2 people for this)
1) Press the 'D' shaped lock button on the adjuster and loosen the cable setting (The black housing that the metal cable is in will move forward).
2) Now, have someone floor the gas pedal while you check to see if the throttle plate is open all the way. Usually they are off a little and will wiggle. Do whatever you have to do to get it open solid.
3) Now, with the pedal still floored, press the 'D' shaped lock button and pull the cable casing (the black tube) back towards the firewall as hard as you can (putting maximum tension on the metal cable) and release the 'D' shaped lockbutton. You now have the engine, tranny and gas pedal all in sync at WOT.
4) Mark the cable casing so if for some reason it gets moved you can know where to put it again. (I just counted the little ridges exposed on the cable housing).
The problem with the 'self adjust method' is that it bends things and puts them permanently out of whack. It is also the full TV setting, which is theoretically what the GM method does.