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:
Services Not Included in Roadside
Assistance
Roadside Assistance does not
cover or reimburse services for the
following:
• Events caused by fraud or bad
faith by the driver.
• Vehicle immobilization situations
due to a major force ...
Reporting Safety Defects to General
Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, please notify General Motors.
Call 1-800-521-7300, or write:
Buick Customer Assistance Center
P.O. Box 33136
Detroi ...
Insuring the Vehicle
Protect your investment in the GM vehicle with comprehensive and collision insurance
coverage. There are significant differences in the quality of coverage afforded
by various insurance policy ter ...