See also:

OnStar®
OnStar® uses several innovative technologies and live advisors to provide a wide range of safety, security, navigation, diagnostics, and calling services. ...

Brake Assist
This vehicle has a brake assist feature designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature uses the stability system hydrauli ...

Under the Hood
In all but the Ultra models, a standard 185-hp, 3.4-liter V-6 teams with a four-speed-automatic transmission. The Rendezvous Ultra gets a 245-hp, 3.6-liter V-6; this engine is optional in the CXL. ...