Not sure, here is what amsoil says. A lot of it depends on the gears but unless you have the HD model I would just plan on heaving enough for the middle option:
ACITIES:
Engine, with filter..........6 quarts [1]
Cooling System, With Front & Rear AC Initial Fill..........15.9 quarts
AMSOIL Antifreeze and Engine Coolant
Cooling System, With Front AC Initial Fill..........14.4 quarts
AMSOIL Antifreeze and Engine Coolant
Cooling System, Without AC Initial Fill..........14.3 quarts
AMSOIL Antifreeze and Engine Coolant
Automatic Transmission, 4L80-E Initial Fill..........7.7 quarts
Automatic Transmission, 4L60-E Initial Fill..........5 quarts
Automatic Transmission, Total Fill
4 speed 4L80-E..........13.5 quarts
4 speed 4L60-E..........11.2 quarts
Differential, F4WD Front..........3.4 pints
Differential, S4WD Front..........3.4 pints
Differential, 9.25 RingGear Front..........3.6 pints
Differential, 10.5 RingGear Rear..........5.5 pints
Differential, 11.5 RingGear Rear..........7.6 pints
Differential, 8.6 RingGear Rear..........4.9 pints
Differential, 9.5 RingGear Rear..........5.5 pints
Transfer Case, NVG 149..........4.9 pints
Transfer Case, NVG 236/246..........4 pints
Transfer Case, NVG 261/263..........4 pints