Pontiac 2004 Grand Prix - Manual (Page 322)

Power Steering Fluid
The power steering fluid reservoir is located in the
engine compartment next to the engine coolant recovery
tank. It sits low in the engine compartment. See
Engine Compartment Overview on page 5-12 .
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.
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.
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