How many gallons of antifreeze does a 1997 3500?

The amount of antifreeze needed for a 1997 Chevrolet 3500 typically ranges between 12 to 16 quarts, depending on the specific engine and cooling system configuration. This translates to approximately 3 to 4 gallons of antifreeze when considering a full drain and refill. Always refer to the owner's manual for the most accurate specifications for your vehicle.