Potential Issues

Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five days, OnStar can contact Roadside Assistance and a locksmith to help gain access to the vehicle.

    See also:

    Brake System Messages
    SERVICE BRAKE SYSTEM This message displays along with the brake system warning light if there is a problem with the brake system. See Brake System Warning Light  . If this message appears, s ...

    Trailer Towing
    If the vehicle is a hybrid, see the hybrid supplement for more information. Do not tow a trailer during break-in. See New Vehicle Break-In   for more information. WARNING The drive ...

    Tire Pressure for High-Speed Operation
    WARNING Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires. Sustained high-speed driving causes excessive heat buildup and can cause sudden tire failure ...