2001 Accent check engine light
 

I have a 2001 Hyundai Accent. The check Engine light keeps coming on.
My service shop told me the code was P1510, Manu. controlled vehicle
speed, idle control, aux. inputs. Is this correct? They showed me the
part which is held by 2 screws & has one plug in connector. If I can
find this part at a junkyard, is there any problem with installing it
myself or are there any adjustments that will be needed?