Buick 2010 Lacrosse Owner's Manual page 103

This gauge shows the engine
coolant temperature.
If the gauge pointer moves towards
the shaded area, the engine is
too hot.
This reading indicates the same
thing as the warning light. It means
that the engine coolant has
overheated. If the vehicle has been
operating under normal driving
conditions, pull off the road, stop the
vehicle, and turn off the engine as
soon as possible. See
information.
There is a driver safety belt
reminder light on the instrument
panel cluster.
When the vehicle is started this light
flashes and a chime may come on
to remind drivers to fasten their
safety belts. Then the light stays on
solid until the belt is buckled. This
cycle may continue several times if
the driver remains or becomes
unbuckled while the vehicle is
moving.
for more
If the driver safety belt is buckled,
neither the light nor chime come on.
When the vehicle is started this light
flashes and a chime comes on to
remind passengers to fasten their
safety belt. Then the light stays on
solid until the belt is buckled. This
cycle continues several times if the
passenger remains or becomes
unbuckled while the vehicle is
moving.
If the passenger safety belt is
buckled, neither the chime nor the
light comes on.