Courtesy Lamps
The courtesy lamps come on automatically when any door is opened and the dome lamp is in the door position.
See also:
Fuel Economy Mode
The vehicle may have a fuel economy mode. When engaged, fuel economy mode
can improve the vehicle's fuel economy.
Pressing the eco button by the shift lever will engage fuel economy mode.
Whe ...
Oil Life Remaining
If the vehicle has this display,
it shows the estimated oil life
remaining. If you see 99% Oil Life
Remaining on the display, that
means that 99% of the current oil
life remains.
When the o ...
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 ...