4.5 quarts for the 4.3 L v6.
(I deleted a previous answer of 5 quarts, I've run 4.5 quarts full synthetic 5w30 forever on 13 psi of boost on a 4.3 silverado, so I can say without a doubt there is no need for anything more than the recommended 4.5 quarts)
The 2005 Chevrolet Silverado-2500HD has 16 valves.
The 2005 Chevrolet Silverado-1500 has 12 valves.
5 5
The 2005 Chevrolet Silverado-2500HD's engine produces 300 hp @ 4400 rpm.
The gas tank on the 2005 Chevrolet Silverado-1500 holds 26.0 gal..
The 2005 Chevrolet Silverado-1500's engine produces 195 hp @ 4600 rpm.
The gas tank on the 2005 Chevrolet Silverado-2500HD holds 34.0 gal..
6 QTS. with new filter.
Aproximately 4 total.
An 8 cylinder Chevrolet Silverado needs 5 quarts of oil for an oil change. This includes the small amount of oil stored in the oil filter when changed.
14 quarts but when u just drain the fluid from the pan its about 7-8
7 quarts is the recommended amount of oil in a 1999 Chevrolet Silverado 3500. You should change your oil every 3 months or every 5,000 miles in this truck.