Service
For service and parts needs, visit your dealer/retailer.
You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:
See also:
Ending a Call
Press to end a call. ...
Special Application Services
Severe Commercial Use Vehicles Only: Lubricate chassis components every
5 000 km/3,000 mi.
Have underbody flushing service performed once a year.
...
How OnStar Service Works
: This blue button connects you
to a specially
trained OnStar advisor to verify your account information
and to answer questions.
: Push this red emergency button to
get priority help
fro ...