1997 GMC Sonoma Owner's Manual - Page 6

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." In the 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 tohelp avoid the damage. When you read other manuals, you might see CAUTION and NOTICE warnings in different colors or in different words. You'll also seewarning labels on your vehicle. They use the same words, CAUTION or NOTICE. Vehicle Damage Warnings Also, in this book you will find these notices: I NOTICE: These mean there something that could is damage your vehicle. iv