Ram Trucks 2015 ProMaster City - Owner Manual - Manual (Page 268)

Adding Fuel
The gas cap is located behind the fuel filler door on the
left side of the vehicle. If the gas cap is lost or damaged,
be sure the replacement cap is for use with this vehicle.
1. Open the fuel filler door.
2. Remove the fuel cap by rotating it counterclockwise.
3. Fully insert the gasoline nozzle into the filler pipe.
4. Fill the vehicle with fuel.
NOTE:
When the fuel nozzle “clicks” or shuts off, the
fuel tank is full.
Fuel Filler Cap
266 STARTING AND OPERATING