GMC 1993 Safari Owner's Manual page 303

Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air conditioning
system in your vehicle needs refrigerant, be sure the proper refrigerant is
used. If you're not sure, ask your GM dealer.
Air Conditioning Refrigerant Capacity
TYPE QUANTITY SYSTEM
R-12
R-12
3.00 Ibs. (1.4 kg)
C-60
3.75 Ibs. (1.7 kg) C-69
TO239
Crankcase
QUANTITY
ENGINE Without Filter
I
With Filter VIN CODE
4.3L
4.5 Quarts (4.3 Liters) 4 Quarts (3.8 Liters)
w
4.3L
4.5 Quarts (4.3 Liters)
4 Quarts (3.8 Liters)
Z
All quantities are approximate.
After refill, the level MUST be checked.
Fuel Tank
TYPE
QUANTITY
Standard
Quantity is approximate.
27 Gallons (102 Liters)
TO1
87
6-65