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 options available.
See also:
Turn and Lane-Change Signals
Move the lever all the way up or down to signal a turn.
An arrow on the instrument panel cluster flashes in the direction of the turn or lane change.
Raise or lower the lever until the arrow sta ...
Transferring Service
Push to request account transfer
eligibility information. The Advisor
can assist in canceling or removing
account information. If OnStar
receives information that vehicle
ownership has chan ...
Climate Control System
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
For vehicles with the remote start feature, when
activated, the climate control system heats or cools the ...