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:
Compressed Audio
The radio also plays discs that contain both
uncompressed CD audio (.CDA files) and MP3 files.
By default the radio reads only the uncompressed audio
and ignore the MP3 files. Pressing the CAT bu ...
Managing the Vehicle Damage Repair
Process
In the event that your vehicle requires damage repairs,
GM recommends that you take an active role in its
repair. If you have a pre-determined repair facility of
choice, take your vehicle there, ...
Maintenance when Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See the
Maintenance Schedule. Things that are
especially important in trailer
operation are automatic
transmission fluid, engine ...