Non-mopar mechanical question?

Gnome said

what evap code is it setting? small leak? large leak? give us the actual P04?? code

Click to expand...

Hey, it threw the code again....P0440. I picked up a spare evap pressure sensor, and will grab a pressure valve and gas cap next time I'm at the boneyard, but are the canister and solenoid common for failing on the 97' Jimmys, Blazers and Bravadas?