Speedometer
The speedometer shows how fast the vehicle is moving in either kilometers per hour (km/h) or miles per hour (mph). The speedometer cannot be reset.
See also:
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 ...
Trailer Towing
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information.
If the vehicle is a hybrid, see the hybrid supplement for more information.
Do not tow a trailer during br ...
Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). ...