How much coolant does my 2004 trailblazer need?

The 2004 Chevrolet Trailblazer typically requires about 10.5 quarts (or approximately 2.6 gallons) of coolant when performing a complete system refill. It's important to use a 50/50 mixture of coolant and distilled water, or a pre-mixed coolant designed for your vehicle. Always refer to your owner's manual for specific recommendations and check for any variations based on your engine type.