Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm).
See also:
Security Light
The security light should come on briefly as the engine is started. If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your dealer ...
Towing with a Stability Control System
When towing, the sound of the stability control system might be heard. The system
is reacting to the vehicle movement caused by the trailer, which mainly occurs during
cornering. This is normal wh ...
TTY Users
OnStar has the ability to communicate to the deaf, hard&-ofhearing, or speech&-impaired
customers while in the vehicle. The available dealer&-installed TTY system can provide
in-vehicl ...





