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:
Cleaning the Inside of Your Vehicle
Your vehicle’s interior will continue to look its
best if it is cleaned often. Although not always
visible, dust and dirt can accumulate on your
upholstery. Dirt can damage carpet, fabric, leathe ...
Owner Checks and Services
These owner checks and services should be
performed at the intervals specified to help ensure
the safety, dependability, and emission control
performance of your vehicle. Your GM
Goodwrench® deal ...
Listing Stored Numbers
The list command will list all the
stored numbers and name tags.
Using the “List” Command
1. Press . The system
responds “Ready,” followed by
a tone.
2. Say “Directory.”.
3. Say ...