On some vehicles, the power steering pump is very difficult to access for level checks as it is covered by other engine accessories. On these, a funnel is absolutely necessary when adding fluid.
The power steering pump reservoir is usually located at the front left-side of the engine.
Use GM Power Steering Fluid No. 1050017 or equivalent.
Avoid using automatic transmission fluid in the power steering unit.
See Figures 1, 2 and 3
The power steering fluid should be checked at least every 6 months. There is a Cold and a Hot mark on the dipstick. To prevent possible overfilling, check the fluid level only when the fluid has warmed to operating temperatures and the engine is shut OFF . If necessary, add fluid to the power steering pump reservoir.
On models equipped with a remote reservoir, the fluid level should be1/2-1 in. (25.4mm) from the top when the wheels are turned to the extreme left position.