
For the base level cluster, this light comes on when the fuel tank is low on fuel. The light turns off when fuel is added. If it does not, have the vehicle serviced.

For the uplevel cluster, this light is near the fuel gauge and comes on briefly when the ignition is turned on as a check to show it is working.
It also comes on when the fuel tank is low on fuel. The light turns off when fuel is added. If it does not, have the vehicle serviced.
Engine Oil Pressure Light
Diesel Exhaust Fluid (DEF) Warning LightInput, Reaction, and Output Carrier Assemble (Gen 2) Automatic Transmission Unit
Input, Reaction, and Output Carrier AssembleCalloutComponent Name13–5 Reverse and 4–5–6 Clutch Housing Assembly2Reaction Carrier Sun Gear Thrust Bearing3Reaction Carrier Sun Gear Assembly4Reaction Carrier AssemblyNote:Starting in 2012, all 6T30/40/45/50 models have 3-pinion reaction carriers. ...