ok so i posted awhile back my truck keep throwing a p2121 code etc light comes on i get the dead pedal and some times it will buck the truck like im pumping the gas pedal but im not touching it. from what i gatherd so for seems to be the apps or some sensor so anyone no where its at and do they offer a after market one. my truck is a 2007 6.7 2500 4x4 dpf egr delete 5 inch turbo back pipe h&s tuner. my email is jakeydo07@yahoo.com i check that more than on here so let me know i really need to get this fixed before it causes a crash when i cross the hwy! one more question is the apps in the actual gas pedal or some where else?

 

It is a sensor that could have failed you will need to check to make sure that the wiring is connected correctly and that the connector is tight. If the wiring and connector are correct than you will need to buy either a new sensor or one from a junkyard that has one form a RAM truck.
Jim W.