Power Steering Fluid; Brakes - GMC Yukon Denali 2010 Manual

Power Steering Fluid

The vehicle has electric power steering and does not
use power steering fluid.

Brakes

Brake Fluid
There are only two reasons why the brake fluid level in
the reservoir might go down:
The brake fluid level goes down because of normal
brake lining wear. When new linings are installed,
the fluid level goes back up.
The brake master cylinder
reservoir is filled with
DOT 3 brake fluid. See
Engine Compartment
Overview on page 6 4
for the location of the
reservoir.
A fluid leak in the brake hydraulic system can also
cause a low fluid level. Have the brake hydraulic
system fixed, since a leak means that sooner or
later the brakes will not work well.
Do not top off the brake fluid. Adding fluid does not
correct a leak. If fluid is added when the linings are
worn, there will be too much fluid when new brake
linings are installed. Add or remove brake fluid, as
necessary, only when work is done on the brake
hydraulic system.
WARNING:
If too much brake fluid is added, it can spill on the
engine and burn, if the engine is hot enough.
You or others could be burned, and the vehicle
could be damaged. Add brake fluid only when
work is done on the brake hydraulic system.
See Checking Brake Fluid in this section.
When the brake fluid falls to a low level, the brake
warning light comes on. See Brake System Warning
Light in the owner manual.
Refer to the Maintenance Schedule to determine when
to check the brake fluid. See Scheduled Maintenance
in the owner manual.
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