Security Light
This light will come
on
briefly
when
you turn the
SECURITY
The light will stay on until the engine starts.
If
the light
flashes, the Passlock
TM
System has entered
a
tamper
mode.
If
the vehicle fails
to
start, see “Passlock”
in
the Index.
If
the light comes
on
continuously while driving and
stays
on,
there rnay be
a
problem with the Passlock
System. Your vehicle
will
not be protected by Passlock,
and
you
should see your
GM
dealer.
Service Four-wheel Drive Warning Light
(If
Equipped)
If
your vehicle is equipped
with
the Automatic
Four- Wheel-Drive Transfer Case,
it
has
a computer
which controls the four-wheel-drive system.
SERVICE
4WD
.
This
light should come on
briefly when you turn on the
ignition,
as
a check to show
you
it
is working.
The
SERVICE
4WD light comes
on
to indicate that
there may be
a
problem with the Autornatic
Four-Wheel-Drive system and service
is
required.
Malfunctions can be indicated by the system before any
problem is apparent, which
may
prevent serious damage
to the vehicle. This system
is
also designed
to
assist
your service technician
in
correctly diagnosing
a
malfunction.
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