1997 GMC Suburban Owner's Manual - Page 353

Cooling System Capacity (Approximate) After refill, the level must be rechecked. See "Cooling System" in the Index. t TY VIN ENGINE "VORTEC" 5700 "VORTEC" 7400 R 17.5 Quarts (16.5 QTY With Rear Heater L) L) 20 Quarts (19 L) 27.5 Quarts (26 L) J 25 Quarts (23.5 Crankcase Capacity (Approximate) After refill, the level must be rechecked. See "Engine Oil" in the Index. NTITY VIN ENGINE "VORTEC" 5700 "VORTEC" 7400 WITH FILTER? R J 5 Quarts (4.8 L) 7 Quarts (6.5 L) ?Oil filter should be changed at every oil change. 6-71