1996 GMC Safari Owner's Manual - Page 298

Air Conditioning Refrigerants Not all air conditioningrefrigerants 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. Refrigerant should be added only by a qualified A/C technician. Air Conditioning Refrigerant Capacity Type Quantity* 2.00 lbs. (0.91 kg) R- 134a R- 134a '#Allquantities are approximate. 3.00 lbs. (1.36 kg) "*Front A/C only. **:':Front and Rear A/C. NOTICE: R-134a refrigerant is not compatible withR-12 refrigerant in an air conditioning system.R-12 in an R-134a system will cause compressor failure, refrigerant oil sludge,or poor air conditioning system performance. 6-68