2001 GMC Sierra 1500 Pickup Owner's Manual - Page 424

Crankcase Capacity 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 4300 V6 VORTEC 4800 V8 VORTEC 5300 V8 VORTEC 6000 V8 VORTEC 6600 V8 VORTEC 8100 V8 VIN W V T U 1 G Quantity with Filter[ 4.5 quarts (4.3 L) 6.0 quarts (5.7 L) 6.0 quarts (5.7 L) 6.0 quarts (5.7 L) 6.0 quarts (5.7 L) 6.5 quarts (6.1 L) Fuel Tank Capacity Type Short Bed Long Bed Chassis Cab (Pickup Box Delete) Chassis Cab 3500 Chassis Cab 3500 (California) Chassis Cab 3500 Chassis Cab 3500 (California) Chassis Cab 3500HD Chassis Cab 3500HD Quantity 26 U.S. gallons (98 L) 34 U.S. gallons (128 L) 34 U.S. gallons (128 L) 27 U.S. gallons (102 L) (front) 23 U.S. gallons (87 L) (rear) 24 U.S. gallons (90 L) (front) 23 U.S. gallons (87 L) (rear) 27 U.S. gallons (102 L) (front) 27 U.S. gallons (102 L) (front) 23 U.S. gallons (87 L) (front) 18 U.S. gallons (68 L) (rear) 23 U.S. gallons (87 L) (front) [Oil filter should be changed at every oil change. 6-82