Brakes; Brake Fluid - GMC 2007 Canyon Owner's Manual

Brakes

Brake Fluid

There are only two reasons why the brake fluid level
in the reservoir might go down. The first is that the
brake fluid goes down to an acceptable level during
normal brake lining wear. When new linings are put
in, the fluid level goes back up. The other reason is
that fluid is leaking out of the brake hydraulic system.
If it is, you should have the brake hydraulic system fixed,
since a leak means that sooner or later the brakes
will not work well.
5-38
The brake master
cylinder reservoir is filled
with DOT-3 brake fluid.
See Engine Compartment
Overview on page 5-12
for the location of the
reservoir.
It is not a good idea to top off the brake fluid. Adding
brake fluid will 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.
CAUTION:
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If you have too much brake fluid, it can spill on
the engine. The fluid will burn if the engine is
hot enough. You or others could be burned,
and your vehicle could be damaged. Add brake
fluid only when work is done on the brake
hydraulic system. See "Checking Brake Fluid"
in this section.
Refer to the Maintenance Schedule to determine when
to check the brake fluid. See Scheduled Maintenance
on page 6-4.