GMC 1995 Jimmy Owner's Manual page 122

You will see this light flash for a few seconds when you
turn your ignition
to
RUN
or
START.
Then the light should go out. This means the system is
ready.
If the air bag readiness light doesn't come on when you start your vehicle,
or stays
on, or comes
on
when
you
are driving, your air bag system may not
work properly. Have your vehicle serviced right away.
Brake System Warning Light
BRAKE
Your vehicle's hydraulic brake system is divided into two parts. If one part
isn't working, the other part can still work and stop you. For good braking,
though, you need both parts working well.
If the warning light comes on, there could be a brake problem. Have your
brake system inspected right away.
This light should come on briefly as you start the vehicle. If it doesn't come
on then, have it fixed so it will be ready to warn you if there's a problem.
If the light comes on while you are 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. If the light is still on, have
the vehicle towed for service. (See "Towing Your Vehicle" in the Index.)
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