How far can you go when the fuel light comes on in a Chevy Trailblazer?

The light comes on with 2 gallons left; there is no set distance. When that light comes on I only like to drive another 15 miles (usually not stop and go traffic) just to be safe.

I once drove mine with the light on for about 30 miles. It was all highway. I turned the A.C. off, set the cruise and did the speed limit. I was pretty nervous for that stretch. I haven't and wouldn't try it again.