Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Remote Start Heated Seats
When it is cold outside, the heated seats can be turned on automatically during
a remote vehicle start. The heated seats will be canceled when the ignition is turned
on. Press the control to use t ...
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 ...
If Steam Is Coming from the
Engine Compartment
See Overheated Engine Protection
Operating Mode for
information on driving to a safe
place in an emergency. ...