General Information, Allison Transmissions
Refer to the Allison website for additional information: see www.allisontransmission.com.
Allison transmissions have electronic shift controls that can be programmed to allow the use of different numbers of geared speeds. For instance, the transmission can be programmed to operate as a 4-speed, 5-speed, or 6-speed unit in the 'primary' shift mode. If needed, a 'secondary' shift mode can be programmed to provide another shift configuration to optimize vehicle use under different operating conditions. To activate a secondary shift mode, or other special functions programmed into the electronic control unit (ECU), briefly depress the mode switch on the multi-function stalk switch control; see Fig. , item 3.
Note: See Table for a description of control functionality.
-
Rotate for drive (D), neutral (N), or reverse (R).
-
Short press for automatic mode or switch between available modes.
-
Long press for manual mode.
-
Pull for upshift (+) request.
-
Push for downshift (-) request.
Fig. 1, Automated/Automatic Transmission Shift Control
These transmissions use the multi-function stalk switch to select mode, direction, neutral, low, and to preselect lower ranges. The current gear, highest available gear, and mode are shown in the driver display; see Fig. . Forward shifts can be made either automatically or by using Manual mode.
-
Current Gear
-
Highest Gear Available
-
Mode