Automatic Mode (A)
Refer to the Allison website for additional information: see www.allisontransmission.com.
In automatic drive mode, upshifts and downshifts are made by the transmission without driver intervention.
Automatic mode is the default start mode. If in manual mode, a short push on the shift control mode switch activates the automatic mode (A). Rotate the D/N/R switch to Drive (D), and press down on the throttle pedal. The transmission will shift automatically.
Note: If attempting to select a non-neutral mode without applying the service brakes, the transmission will not shift into gear. To shift into gear, select neutral (N), apply the service brakes, and select the desired mode again.
In drive (D), the start gear is automatically selected. The transmission automatically performs upshifts and downshifts.