GMC 2002 Envoy - Manual (Page 150)

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Anti-Lock Brake System Warning Light
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 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 section.
The anti - lock brake system warning light should come
on briefly when you turn the ignition key to RUN. If the
light doesn’t come on then, have it fixed so it will be
ready to warn you if there is a problem.
Engine Coolant Temperature Gage
United States Canada
This gage shows the engine coolant temperature. If the
gage pointer moves into the red area, it means that your
engine coolant has overheated. If you have been
operating your vehicle under normal driving conditions,
you should pull off the road, stop your vehicle and turn
off the engine as soon as possible.
See “Engine Overheating” in the Index for
more information.