GMC 2004 Envoy Owner's Manual page 3

Safety Warnings and Symbols
You will find a number of safety cautions in this book.
We use a box and the word CAUTION to tell you about
things that could hurt you if you were to ignore the
warning.
CAUTION:
{
These mean there is something that could hurt
you or other people.
In the caution area, we tell you what the hazard is.
Then we tell you what to do to help avoid or reduce
the hazard. Please read these cautions. If you don't,
you or others could be hurt.
You will also find a
circle with a slash
through it in this book.
This safety symbol means
"Don't," "Don't do this"
or "Don't let this happen."
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