so i get my car back fromt he dealer from an oil change, and after like 20 miles or so i get the service engine soon light, i dident have it b4 i took it into the dealer. any idea?

 

Check the oil and make sure the car has some in it, check the gas cap too.

Then go back to the dealer and say WTF?

 

check underneath the car and make sure your not leaking any after you check your oil level

 

Sorry to hear this brother. Honestly if I were in your shoes, I would take it to the dealer. Dont check nothing, dont give yourself more of a headache. When I got my first oil change my car felt 10 times more reponsive, and faster in alot of ways. Complete opposite of a CEL.