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:
Care of Safety Belts
Keep belts clean and dry.
WARNING:
Do not bleach or dye safety belts. It may severely
weaken them. In a crash, they might not be able
to provide adequate protection. Clean safety belts
only wi ...
Storing Name Tags
The system can store up to thirty phone numbers as
name tags that are shared between the Bluetooth and
OnStar systems.
The system uses the following commands to store and
retrieve phone numbers ...
Adding Equipment to Your Airbag-Equipped Vehicle
Q: Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A: Yes. If you add things that change your
vehicle’s frame, bumper system ...