CHECK ENGINE LIGHT on 2003 Chevrolet Venture

MY CHECK ENGINE LIGHT COME'S ON THEN GOSE OFF FOR NO REASON WHAT CAN IT BE ? AN IF YOU ANSWER THANK YOU THIS THING WON'T LET ME REPLY SO IF I ADD TO WHAT I HAVE ASKED THAT THE REASON

by in Tehama, CA on December 11, 2012
3 answers
ANSWER by , December 12, 2012
have it scan tested for codes
ANSWER by , December 12, 2012
auto zone will scan for free then post codes so we can adv
ANSWER by , December 12, 2012
MARY, YOUR CHECK ENGINE LIGHT IS ON NOW? OR IT COMES AND GOES? WHEN IT IS ON, TRY TO GET TO A PARTS STORE OR SHOP THAT CAN READ YOUR CODE WITH A SCANNER AND THEN POST THE CODE HERE SO WE CAN HAVE AN IDEA WHAT IS GOING ON WITH YOUR CAR.