GMC 1993 Jimmy Owner's Manual page 135

comes on while driving, pull off the road and stop carefully. You may notice
that the pedal is harder to push. Or, the pedal may go closer to the floor. It
may take longer to stop. I f the light is still on, have the vehicle towed for
service. (See "Towing Your Vehicle" in the Index.)
A Your brake system
may not
be working
properly i f
the brake warning
tight is
on. DMng with the brake warning tight on can lead to an
accident. If the light
is still
on after you've pulled off the road and
stopped
carefully,
have the
vehicle towed
for
sewiee.
Antilock Brake System Warning Light
Standard Cluster Digital Cluster
PO160
With antilock, this light will go on when you start your engine and may stay
on for a few seconds. That's normal.
If the light doesn't come on, have
it fixed so it will be ready to warn you if
there is a problem.
If
the light stays
on,
or comes on when you're driving, your vehicle needs
service. Unless the regular brake system warning light is also on, you will still
have brakes, but not antilock brakes. If the regular brake system warning light
is also on, see "Brake System Warning Light" earlier in this part.
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