98 cavalier

i have a question, i am not very car literate i just bought a 98 cavalier 2.2L from a reputable dealership and now after 2 days of driving the check engine light came on. i remember them telling me that when they ran it thru service the light was on but they reset it and it went off.any suggestions?

Bring it back to them and tell them to fix it...

Lemon law...