Hummer 2007 H2 Owner's Manual page 429

Notice:
•
Using the wrong fluid can badly damage
brake system parts. For example, just a
few drops of mineral-based oil, such
as engine oil, in the brake system can
damage brake system parts so badly that
they will have to be replaced. Do not
let someone put in the wrong kind of fluid.
•
If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See Washing Your Vehicle
on page 495.
Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the
brake pads are worn and new pads are needed.
The sound may come and go or be heard all
the time your vehicle is moving, except when you
are pushing on the brake pedal firmly.
CAUTION:
{
The brake wear warning sound means
that soon the brakes will not work well.
That could lead to an accident. When you
hear the brake wear warning sound, have
your vehicle serviced.
Notice: Continuing to drive with worn-out
brake pads could result in costly brake repair.
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