One problem related to anti-theft devices has been reported for the 2005 Saturn ION. The most recently reported issues are listed below.
No start/no crank in very cold weather! this is the other problem with these switches on the satrun Ions! I called Saturn dealership rt away, when I could not start my car. They had no answer, wanted me to tow my car in. But, when weather warmed up past 20' outside, car turned rt over. This was a "hit & miss" problem, for yrs on my car. Then 2013, was our severely cold winter, in mi. My car, every morn, would not start. I had to all my own research on this problem. To my shock!! what I found! the complaints of this problem, was all over the internet!! then, I found the actual bulletin from gm's from 2009! it described this problem x& to replace the switch! what was happening is the extreme cold weather was throwing off the anti theft switch too! shut the whole car down! I had to pay $500 to replace my ignition switch & key tumbler. Why is this problem not being acknowledged as well? it's as bad as the problem on the news. I also rec'd an extended warranty on the power steering problem too. Sorry I bought a Saturn, but was a good lil car, until this!.