GMC 1995 Jimmy Owner's Manual page 123

The brake system warning light will also come on when you set your
parking brake, and it will stay on if your parking brake doesn't release fully.
If it
stays on
after your parking brake is fully released, it means
you
have a
brake problem.
Anti-Lock Brake System Warning Light
ANTI-LOCK
With the anti-lock brake system, this light will come on when you start your
engine and may stay on for several 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. If the regular brake system warning light isn't on, you still have
brakes, but you don't have anti-lock brakes. If the regular brake system
warning light is also on, you don't have anti-lock brakes and there's a
problem with your regular brakes. See "Brake System Warning Light"
earlier in this part.
Indicator Lights
Indicator lights go on when you use your turn signals, change from low
beam headlights to high beams, or when you use your hazard flashers. The
next few pages will also tell you about the indicator lights on your vehicle
and help you locate them.
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