GMC C-Series 2001, Owner'S Manual, Page: 230 / 324

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Power Steering Fluid
See your Maintenance Schedule for when to check your
power steering fluid.
How To Check Power Steering Fluid
Check your power steering fluid only when the engine is
warm. If the engine isn’t warm, you probably won’t get
an accurate reading.
If you can see fluid in
the sight glass, you
have enough. If you
need fluid, add only
enough of the proper
fluid to bring it into
view in the sight glass.
What to Use
To determine what kind of fluid to use, see
“Recommended Fluids and Lubricants” in the Index.
NOTICE:
When adding power steering fluid or making a
complete fluid change, always use the proper
fluid. Failure to use the proper fluid can cause
leaks and damage hoses and seals.
If your power steering fluid level is low, this can
cause the PRIMARY BRAKE or AUX BRAKE
warning lights to come on. If either light remains
on after you have added power steering fluid to
the proper level, then shut off the engine for
10 seconds. This should reset the brake warning
lights. If one or both lights stay on though, see
“Hydraulic Brake Warning Lights” in the Index.