GMC 2009 Sierra - Manual (Page 346)

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.
How to Check Power Steering Fluid
To check the power steering fluid, do the following:
1. Turn the key off and let the engine compartment
cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level
on the dipstick.
The level should be at the FULL COLD mark.
If necessary, add only enough fluid to bring the level
up to the mark.
What to Use
To determine what kind of fluid to use, see
Recommended Fluids and Lubricants on page 6-12.
Always use the proper fluid.
Notice: Use of the incorrect fluid may damage your
vehicle and the damages may not be covered by
your warranty. Always use the correct fluid listed in
Recommended Fluids and Lubricants on page 6-12.
5-34