See also:

PRESS BRAKE TO START ENGINE (AUTOMATIC TRANSMISSION ONLY)
If the vehicle has the keyless access system, this message displays if you try to start the engine without having the brake pressed. The brake needs to be pressed when starting the engine. Se ...

XM NavTraffic (USA and Canada)
Vehicles with the navigation system have an XM NavTraffic receiver. XM NavTraffic is a subscription service provided via XM Satellite Radio. XM NavTraffic provides real-time traffic information fu ...

Reactivation for Subsequent Owners
Push and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle. The Advisor will update vehicle records and will explain the OnStar service offers and opt ...