p0442 code help
 

I have a 01 ram 1500 sport 5.9L and I keep getting a CEL Code p0442 Evap leak small. I've had a smoke test done and they didn't find any leak but recommend I replace the leak detection pump and solenoid also gas cap but the code keeps coming back the only thing left to replace is the vapor cannister but I doubt it will fix it. any ideas??