I have a 2001 dodge ram 1500 4X4 with the 360. It has 180,000 miles and i drive it like a old lady its my baby. Ok well on the left front side under the hood there is 2 hoses that run the fender to a little round thing. What is that round thing and one hose sucks air dose it go on top or bottom. SORRY i dont have a camera to take a picture. And my truck is throwing some codes. P0442, P0455 and P1494 can some on tell me how to fix the codes and or what is making them throw codes! TY

 

If it's under the battery tray it is the module for the cruise control.