* Fuel Gauge: This is the primary indicator. The needle on the gauge gives a general idea of how much fuel is remaining. However, this is an approximation and not a precise measurement of miles left.
* Trip Odometer/Range: Some 2004 Trailblazers *might* have a rudimentary range estimate displayed. This is often calculated based on recent fuel consumption and the amount of fuel remaining according to the gauge. This range is still an estimate and not completely accurate. It's often represented as a number of miles next to the fuel gauge. Check your owner's manual to be sure if yours has this feature; not all did.
To get a better idea of miles left:
1. Check your owner's manual: It will give you the fuel tank capacity for your specific Trailblazer model.
2. Calculate your fuel economy: Track how many miles you drive on a full tank. Divide the number of miles driven by the number of gallons used to fill up. This gives you your miles per gallon (MPG).
3. Estimate remaining miles: Multiply your calculated MPG by the approximate amount of fuel left in your tank (judged by the fuel gauge). This is still an *estimate*.
In short, you can't get an exact number of miles left. The fuel gauge is your best guide, supplemented by estimations based on your calculated MPG. Regular fuel monitoring and filling up before the gauge gets too low are your best strategies to avoid running out of gas.
