GMC 1999 Sierra 1500 Pickup Owner's Manual page 194

If
you
keep pace with the traffic and alllow realieti~ following dbtances, 'you
will eliminate a lot
. o f
unnecessary braking.. That means
-
better brakin'g
.
and
longer brake life;
\
,*
If your engine ever
stops
while- you're driving, brake normally but
don't
pump
your brakes. If
you do, tht$
pedal may get harder to. .push down.
If
your-
engine stops, you w i l l
still
have
some
power $rake, assist
But
you
wi l l use it when you brake. Once
the power
assist
=is
used 'up, it
may
take longer to
stop
and the
brake
pedal
will be harder to push.
Anti-lock Brakes (ABS)
Your vehicl'e has
an
'advanced electronic braking system that can help keep
it
under
Control.
When you turn your key on you m.ay .hear
a
momentary
clicking ngise.
,
, .
Here's
I
how
anti-lock .works. Let's
say
the
road
is wet. You're d.rivilng.
sifely.
Suddenly an animal
jumps out
In
frqnt of you.