Verify Minutes and Expiration
Push 
and say “minutes” then “verify” to check how many minutes remain and their expiration date.
See also:
Under the Hood
Both the four-cylinder and V-6 engines use direct-injection technology. An
Eco mode, which is activated by a dashboard button, alters drivetrain
calibrations in the four-cylinder to maximize fuel ...
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 ava ...
Power Windows
WARNING
Leaving children in a vehicle with the keys is dangerous for many reasons. Children or others could be badly injured or even killed.
They could operate the power windows or other controls or ...