See also:

Vehicle Personalization
The audio system controls are used to access the personalization menus for customizing vehicle features. CONFIG (Configuration): Press to access the Configuration Settings Menu. MENU/SELECT Knob: ...

Range Selection Mode (Allison® Transmission or Hydra-Matic® 6-Speed Transmission)
The vehicle may have a Range Selection Mode. The Range Selection Mode helps control the vehicle's transmission and vehicle speed while driving down hill or towing a trailer by letting you select a d ...

Hydraulic Power Steering
Your vehicle has hydraulic power steering. It may require maintenance. See Power Steering Fluid on page 10‑21. If power steering assist is lost due to a system malfunction, the vehicle can be s ...