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.
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).