cavalier ETS light

i have a 1997 chev cavalier, recently i had a vaccum line to my fuel pump replaced at the dealer, but now my ETS and check engine lights are on. could anyone tell me what ETS stands for? thanks

It's the traction control. I think it's "Electronic Traction System" or similar. It means your traction control has been shut off by the computer because of a mulfunction. It does not mean that the malfunction is in the traction control system though.
The vaccuum line you're referring to - are you sure it wasn't to the fuel pressure regulator?