1998 GMC Suburban Owner's Manual - Page 363

Cooling System Capacity (Approximate) After refill, the level must be rechecked. See "CoolingSystem'' in the Index. ENGINE "VORTEC" 5700 "VORTEC" 7400 VIN R J QTY Without Rear Heater 17.5 Quarts ( 16.5 L) 25 Quarts (23.5 L) QTY With Rear Heater 20 Quarts (19 L) 27.5 Quarts (26 L) Crankcase Capacity (Approximate) After refill, the level must be rechecked. Add enough engine oil so that the fluid is within the proper operating range. See "Engine Oil" in the Index. ENGINE "VORTEC" 5700 "VORTEC" 7400 VIN R J QUANTITY WITH FILTER? 5 Quarts (4.8 L) 6.6 Quarts (6.3 L) ?Oil filter should be changed at every oil change. Fuel Tank Capacity (Approximate) TYPE Utility Suburban - Gasoline Suburban - Diesel Air Conditioning Refrigerants Not all air conditioning refrigerants are the same. I f the air conditioning system in your vehicle needs refrigerant, be sure the proper refrigerant is used. I f you're not sure, ask your dealer. See refrigerant charge label under the hood for charge capacity information and requirements. QUANTITY 30 Gallons (1 13 L) 44 Gallons ( 167 L) 42 Gallons (1 59 L)