Pontiac Sunbird Owner's Manual page 216

Power
Steering
Fluid
H C G
to Check Power Steering Fluid:
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.
When the engine compartment is hot,
the level should be near the H mark.
When the engine compartment is cool,
the level should be near the C mark.
2.0L L4 Engine: Checking Power
Steering Fluid
What to Add:
Refer to the Maintenance Schedule to
determine what kind of fluid to use. S e e
the Index under Fluids & Lubricants.
3.1L V6
Engine: Checking Power
Steering Fluid