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:
Check Engine Light
A computer system called OBD II (On-Board
Diagnostics-Second Generation) monitors operation
of the fuel, ignition, and emission control systems.
It ensures that emissions are at acceptable levels ...
Disarming the System
To disarm the system, do one of the following:
Press on the RKE transmitter.
Approach the vehicle with the RKE transmitter (keyless access).
Start the engine.
The alarm automatically disar ...
Exterior
Sport utility vehicle-like styling features of the Terraza include its
closer-to-vertical squared-off front fascia and its tall hood. Prominent
C-pillars and 17-inch wheels are also supposed to br ...