2005 Buick Rendezvous Owner's Manual - Page 356

8. Then replace the pressure cap. At any time during this procedure if coolant begins to flow out of the filler neck, reinstall the pressure cap. Be sure the arrows on the pressure cap line up properly. Power Steering Fluid See Engine Compartment Overview on page 5-12 for reservoir location. When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. 9. Then fill the coolant recovery tank to the FULL COLD mark. 10. Put the cap back on the coolant recovery tank. 5-36