2000 GMC Sonoma Owner's Manual - Page 273

How to Check Power Steering Fluid Turn the key off, let the engine compartment cool down, wipe the cap and the top of the reservoir clean, then unscrew the cap and wipe the dipstick with a clean rag. Replace the cap and completely tighten it. Then remove the cap again and look at the fluid level on the dipstick. For the VORTEC 4300 V6 engine, the level should be between the ADD and FULL marks. For the 2200 L4 engine, the fluid level should be at the C mark. If necessary, add only enough fluid to bring the level up to the proper range. Adding Washer Fluid What to Use To determine what kind of fluid to use, see "Recommended Fluids and Lubricants" in the Index. Always use the proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals. Windshield Washer Fluid What to Use When you need windshield washer fluid, be sure to read the manufacturer's instructions before use. If you will be operating your vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Open the cap labeled WASHER FLUID ONLY with the washer symbol on it. Add washer fluid until the tank is full. 6-31