However, I cannot give you the exact location without seeing a diagram or picture specific to that year and model. Your best bet is to:
* Consult your owner's manual: This is the most reliable source of information.
* Use an online parts diagram: Many websites (like auto parts stores' websites) offer parts diagrams for specific vehicles. You can search using the year, make, and model of your Suburban. Look for the power steering reservoir.
* Check under the hood yourself: Look for a plastic reservoir with markings indicating power steering fluid. Be careful not to touch hot components in the engine bay.
Adding fluid is typically a simple task: just check the fluid level (it should be between the minimum and maximum lines on the reservoir) and add fluid if necessary. Use the correct type of power steering fluid (check your owner's manual for the recommended type).