How much coolant does a 2004 Chevy Silverado 2500HD hold?

The 2004 Chevrolet Silverado 2500HD offers five engine options, and each has a different coolant capacity. For example, the 6.0L 8-cylinder engine with code [U] 9 has a coolant capacity of either 16.4 or 16.9 quarts. On the other hand, the 6.0L 8-cylinder engine with code [U] U has a capacity of 16.9 quarts with a manual transmission or 13.7 quarts with an automatic transmission. The 6.6 liter 8-cylinder LB7 and LLY turbodiesel engines have a coolant capacity of 24.3 quarts. Lastly, the 8.1L 8-cylinder engine with code [G] G has a capacity of 20.7 quarts with the automatic transmission version and 21.1 quarts with the manual transmission version. It's important to note that the coolant capacity can vary significantly depending on the engine configuration you have in your Silverado 2500HD.