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:
Security
OnStar provides services like Stolen Vehicle Assistance, Remote Ignition Block,
and Roadside Assistance, if the vehicle is equipped with these services. OnStar
can unlock the vehicle doors remotel ...
How the System Works
When the vehicle is shifted into R (Reverse) the front and rear sensors are
automatically turned on.
After the vehicle is shifted out of R (Reverse), the rear sensors are turned
off and the front ...
Parking Assist
If the vehicle has the Ultrasonic
Rear Parking Assist (URPA) system,
this display allows the system to
be turned on or off. Once in this
display, press the set/reset button
to select between ...