GMC 2003 GMT560 T-Series, Owner'S Manual

Page: 183 / 284

5. Then replace the
pressure cap. Be sure
the pressure cap is
hand-tight and
fully seated.
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 the fluid level is between
the MIN and MAX marks,
you have enough. If
you need fluid, add only
enough of the proper
fluid to bring it into view in
the sight glass.
If your power steering fluid level is low, this can cause
the brake or service brake soon 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 System Warning Lights” under
Brake System
Warning Light on page 3-26 for more information.
What to Use
To determine what kind of fluid to use, see Part C:
Recommended Fluids and Lubricants on page 6-27.
Notice: When addng 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.
5-27