Ram 1500/2500/3500 Owners & Service Manuals

Ram 1500/2500/3500: Adding Fuel

The fuel filler cap (gas cap) is located behind the fuel filler door, on the left side of the vehicle. Open the fuel door and remove the fuel cap by turning it counterclockwise.

Adding Fuel
Fuel Filler Cap

NOTE: When removing the fuel filler cap, lay the cap tether in the hook, located on the fuel filler door.


  • Damage to the fuel system or emissions control system could result from using an improper fuel tank filler tube cap (gas cap).
  • A poorly fitting gas cap could let impurities into the fuel system.
  • A poorly fitting gas cap may cause the "Malfunction Indicator Light (MIL)" to turn on.
  • To avoid fuel spillage and overfilling, do not "top off" the fuel tank after filling. When the fuel nozzle "clicks" or shuts off, the fuel tank is full.


  • Never add fuel to the vehicle when the engine is running.
  • A fire may result if gasoline is pumped into a portable container that is inside of a vehicle. You could be burned. Always place gas containers on the ground while filling.


  • Tighten the gas cap until you hear a "clicking" sound.

    This is an indication that the gas cap is tightened properly. The MIL in the instrument cluster may turn on if the gas cap is not secured properly. Make sure that the gas cap is tightened each time the vehicle is refueled.

  • When the fuel nozzle "clicks" or shuts off, the fuel tank is full.


Static electricity can cause an ignition of flammable liquid, vapor or gas in any vehicle or trailer. To reduce risk of serious injury or death when filling containers:

  • Always place container on the ground before filling.
  • Keep the pump nozzle in contact with the container when you are filling it.
  • Use only approved containers for flammable liquid.
  • Do not leave container unattended while filling.
  • A static electric charge could cause a spark and fire hazard.

Loose Fuel Filler Cap Message

If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a loose gascap indicator will display in the EVIC telltale display area.

Refer to "Electronic Vehicle Information Center (EVIC) in "Understanding Your Instrument Panel" for further information.

Tighten the fuel filler cap properly and press the SELECT button to turn off the message. If the problem continues, the message will appear the next time the vehicle is started.


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