Other information:
The tachometer displays the engine speed in revolutions per minute (rpm).
For vehicles with the Stop/Start system, when the ignition is on, the tachometer
indicates the vehicle status. When pointing to AUTO STOP, the engine is off but
the vehicle is on and can move...
For diesel engine vehicles, see “Engine Oil” in the Duramax diesel supplement.
To ensure proper engine performance and long life, careful attention must be
paid to engine oil. Following these simple, but important steps will help protect
your investment:
Use engine oil approved to the proper specification and of the proper viscosity
grade...
.