1994 GMC Safari Owner's Manual - Page 293

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. For additional information, see your "Warranty andOwner Assistance Information" booklet. Air Conditioning Refrigerant Capacity TYPE R- 134a R- 1 34a *All Quantities Are Approximate **Front A/C Only ***Front & Rear A/C QUANTITY* 2.00 lbs. (.91 kg) 3.00 lbs. ( I .36 kg) NOTICE: R-134a refrigerant is not compatible with R-12 refrigerant in an air conditioning system. R-12 in an R-134a systemwill cause compressor failure, refrigerant oil sludge, or poor air conditioning system performance. 6-75