Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Resources for the Repair and Maintenance of your 2005 Saturn Ion Red Line
2005 Saturn Ion Red Line
2005 Saturn Ion Red Line Problems
Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.
GM recommends replacing the engine coolant at 100,000 miles; however, our technicians tell us that the coolant may become contaminated and require a complete cooling system flush every 60,000 to 70,000 miles.
2005 Saturn Ion Red Line Questions and Answers
2005 Saturn Ion Red Line Reviews
Just had to pay $3000 for new clutch, master cylinder,fuel pump and swaybars. Only 35k miles and rarely driven hard. Out of warranty. Very unfortunate.
Awesome car. I've had a few transmission problems, but most of them were the shops fault. Over all i couldn't ask for a better car for the money