The main components of the instrument panel are the following:
Shift Lever. See Starting the Engine.
Cruise Control. Fast Idle System (If Equipped). See Duramax Diesel Manual for more information.
Horn.
Tow/Haul Mode Button. See "Tow/Haul Mode" under Towing a Trailer.
Accessory Power Outlet(s) and Ashtray(s) and Cigarette Lighter.
StabiliTrak® System (If Equipped).
Rear Heating System (If Equipped).