Door Ajar Light
For vehicles equipped with this light, it comes on when a door is open or not securely latched. Before driving, check that all doors are properly closed. See Door Ajar Messages for more information.
See also:
Gate Ajar Light
If this light comes on,
the liftgate or liftglass is
not completely shut.
Close the liftgate or liftglass. Never drive with the
liftgate or liftglass even partially open. ...
Cellular and GPS Antennas
Avoid placing items over or near the
antenna to prevent blocking cellular
and GPS signal reception. Cellular
reception is required for OnStar to
send remote signals to the vehicle. ...
Power Steering Fluid
See Engine Compartment Overview for reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering fluid unless a leak is suspected in the syste ...