The abs light/brake light sounds like possibly the sensor in the rearend.

po441 I think is a evap fault and is either a bad gas cap or hose on the canister over the gas tank.

 

I was thinking along those lines myself. My Ram throws a 0441 or 0442 every now and then, but it never stays on long enough to worry about.

 

The thing about buying used is you NEVER know what was done t the truck or how if was maintained or taken care of if at all.

Blame the previous owner and not Dodge because with an 04, the PO should have done brakes and shocks and tires. Door panels dont just fall off. They are screwed to the door and hooked at the window track.

Sounds like the PO did like most people and used it to the point where it had issues from lack of maintenance and traded it in.

If someone were to buy my truck right now they would find nothing wrong with it mechanically or electrically.