What should the temperature gauge engine temp read in a 2004 Chevy Trailblazer?

The temperature gauge in a 2004 Chevy Trailblazer should sit slightly below the halfway mark, within the normal operating range. It shouldn't be pegged at cold, nor should it be close to the "H" (hot) mark. The exact position of the needle might vary slightly depending on outside temperature and driving conditions, but it should always remain relatively stable in that middle area.