GM Service Manual Online
For 1990-2009 cars only

The tachometer displays the engine speed in revolutions per minute (rpm). For a description of how Grade Braking affects vehicle speed while the Tow/Haul Mode is activated, see "Grade Braking (Allison Transmission®)" under Tow/Haul Mode for more information.

United States Version shown, Canada similar


Object Number: 1998975  Size: A2

When the gas engine is off and the key is in the ON/RUN position, the position of the tachometer indicator shows the state of the vehicle:

    • AUTO STOP position indicates that the vehicle is still able to move and the engine could restart, by an Auto Start, at any time.
    • OFF position indicates that the engine is off.

When the engine is on, the tachometer indicator shows the engine's revolutions per minute (rpm).