The power steering fluid reservoir on a Chevrolet Blazer is usually located
under the hood, near the power steering pump. It's often a small, clear or translucent reservoir with markings indicating the minimum and maximum fill lines. Look for a cap that says "Power Steering Fluid" or has a similar marking.
However, the *exact* location can vary slightly depending on the year and model of your Blazer. Consult your owner's manual for the most accurate location and instructions. The manual will have diagrams and specifics for your specific vehicle.