Navigation
OnStar navigation requires the Directions and Connections service plan.
Push 
to receive directions or
have them sent to the vehicle
navigation screen. Destinations can
also be forwarded to the vehicle
from Google Maps™ or
MapQuest.com. The OnStar
mapping database is continuously
updated. Visit www.onstar.com for
coverage maps.
See also:
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:
...
Key and Lock Messages
NO REMOTE DETECTED
This message displays when the transmitter battery is weak on vehicles with keyless
access.
See “Starting the Vehicle with a Low Transmitter Battery” under Remote Keyless
...
Tachometer
The tachometer displays the engine speed in revolutions
per minute (rpm). ...