Pontiac 1993 Sunbird Owner's Manual page 170

NOTICE:
DOT-5 silicone brake fluid can
Don't let someone put in the
damage your vehicle. Don't use it.
wrong kind of fluid. For example,
just a few drops of mineral-based
oil, such as engine oil, in your
brake system can damage brake
system parts so badly that they'll
have to be replaced.
Brake fluid can damage paint, so
be careful not to spill brake fluid
on your vehicle. If you do, wash it
off immediately. See Appearance
Care in the Index.
Brake Wear
Your Pontiac has front disc brakes and
rear drum 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 t h e your vehicle is moving (except
when you are pushing on the brake
pedal firmly).
NOTICE:
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
may cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean something
is wrong with your brakes.
Your rear drum braltes don't have wear
indicators, but if you ever hear a rear
brake rubbing noise, have the rear brake
linings inspected. Also, the rear brake
drums should be removed and
inspected each time the tires are
removed for rotation or changing. When
you have the front brakes replaced,
have the rear brakes inspected, too.
Brake linings should always be replaced
as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does
not return to normal height, or if there
is a rapid increase in pedal travel. This
could be a sign of brake trouble.
Brake Adjustment
Every time you malce a moderate brake
stop, your disc brakes adjust for wear. If
you rarely make a moderate or heavier
stop, then your brakes
might not adjust
correctly. If you drive in that way,
then-very carefully-make
a few
moderate brake stops about every 1,000
miles (1 600 l a ) , so your brakes will
adjust properly.
If your brake pedal goes down farther
than normal, your rear drum brakes
may need adjustment. Adjust them by
backing up and firmly applying the
brakes a few times.