See also:

Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not o ...

Cruise Control
Press to turn cruise control on and off. + RES: Press briefly to make the vehicle resume to a previously set speed or press and hold to accelerate. −SET: Press to set the speed and ac ...

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. ...