Engine Oil Additives / Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M 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:
Retained Accessory Power (RAP)
These vehicle accessories may be used for up to 10 minutes after the engine is
turned off:
Audio System
Power Windows
Sunroof
The power windows and sunroof will continue to work for up to ...
XM Messages
XL (Explicit Language Channels): These channels, or any others, can be blocked
by request, by calling 1-800-929-2100 in the U.S., and 1-877-438-9677 in Canada.
XM Updating: The encryption code in t ...
When the System Does Not
Seem to Work Properly
The following messages may be
displayed on the DIC:
SERVICE PARK ASSIST: If this
message occurs, take the vehicle to
your dealer to repair the system.
PARK ASSIST OFF: If the URPA
system doe ...