OnStar®
If the vehicle is equipped with an active OnStar system, that system may also record data in crash or near crash-like situations. The OnStar Terms and Conditions provides information on data collection and use and is available at www.onstar.com (U.S.) or www.onstar.ca (Canada), or by pressing the 
button and speaking to an advisor. See OnStar Overview on page 14‑1 for more information.
See also:
Overview
GMC Savana is engineered with an understanding of how you rely on a full-size
van to get the job done right – whether it’s transporting up to 15 people in
comfort in a Passenger Van, or moving ...
Following Distance
Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer.
This can help to avoid heavy braking and sudden turns. ...
Rear Vision Camera (RVC)
The vehicle may have a Rear Vision Camera (RVC) system. Read this entire section
before using it.
The RVC can assist the driver when backing up by displaying a view of the area
behind the vehicle ...