Ram Trucks 2015 Chassis Cab Commercial - Diesel Supplement - Manual (Page 264)

Emergency Fuel Can Refueling
Most fuel cans will not open the flapper door.
A funnel is provided to open the flapper door to allow
emergency refueling with a fuel can.
1. Retrieve fuel funnel from the jack kit located under the
front passenger seat.
2. Insert funnel into same filler pipe opening as the fuel
nozzle.
Diesel Fuel And DEF Fluid Filler Door
Fuel Fill Funnel Location 2500/3500 Models
262 STARTING AND OPERATING