GMC 1993 Safari Owner's Manual page 11

These mean there is something that could damage your vehicle.
In the blue notice area, we tell you about something that can damage your
vehicle. Many times, this damage would not be covered by your warranty, and
it
could be costly. But the notice
will tell you what to do to help avoid the
damage.
When you read other manuals, you might see CAUTION and NOTICE
warnings in different colors or in different words. In this manual, we've used
the familiar words and colors that General Motors has used for years.
You'll also see warning labels on your vehicle. They use the same colors,
and the words CAUTION
or NOTICE.
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