2007 GMC Sierra 1500 Pickup Owner's Manual - Page 264

Tow/Haul Mode Light This light comes on when the Tow/Haul mode has been activated. Fuel Gage For more information, see Tow/Haul Mode on page 147. United States Canada Cargo Lamp Light This light comes on when the cargo lamp is in use. For more information see Cargo Lamp on page 228. When the ignition is on, the fuel gage tells you about how much fuel you have left in your tank. The gage will first indicate empty before you are out of fuel, and you should get more fuel as soon as possible. When the fuel tank is low the FUEL LEVEL LOW message will appear. See DIC Warnings and Messages on page 270 for more information. 264