Specifications Comparison: 2018 GMC Sierra 1500 vs 2003 GMC Sierra 1500

Oil Capacity

Engine	Oil Capacity (Quarts)	Oil Capacity (Liters)	Viscosity
4.3L 6 Cyl. LV3 Flex	6.0 Qts.	5.7 L	5W-30
5.3L 8 Cyl. L83	8.0 Qts.	7.6 L	0W-20
5.3L 8 Cyl. L83 Flex	8.0 Qts.	7.6 L	0W-20
5.3L 8 Cyl. L8B	8.0 Qts.	7.6 L	0W-20
6.2L 8 Cyl. L86	8.0 Qts.	7.6 L	0W-20

Engine	Oil Capacity (Quarts)	Oil Capacity (Liters)	Viscosity
4.3L 6 Cyl. LU3	4.5 Qts.	4.3 L	5W-30
4.8L 8 Cyl.	6.0 Qts.	5.7 L	5W-30
5.3L 8 Cyl. L59 Flex	6.0 Qts.	5.7 L	5W-30
5.3L 8 Cyl. LM7	6.0 Qts.	5.7 L	5W-30
6.0L 8 Cyl.	6.0 Qts.	5.7 L	5W-30