Two problems related to automatic transmission control module have been reported for the 2005 Saturn ION. The most recently reported issues are listed below.
* other affected part was speed control. . . . Aside of the current recall issue having been a problem since I purchased the vehicle in 2005 (which has "been repaired"-I guess so if you call repaired the car trying to start itself, not starting at all, current pcm overload thanks to soo many negative codes being thrown for this worthless piece of junk. ) I have filed numerous complaints with the dealership about the throttle body and am constantly and consistently provided the same answer and it is becoming a big problem. You see this car has left me stranded numerous times (to the point where I cannot keep count any longer) because the throttle body is trash. Not one but two check engines lights appear on the dash, the car shakes (literally to the point where it feels like every plastic panel is going to fall off), I cannot travel any higher than approx. 10mph and have to pull over, turn the car off (keys of course become stuck in the ignition due to the faulty switch) and wait until my car is then ready to start and the throttle body wants to operate as it should. I am now filing this complaint as the most recent codes pulling are once again the throttle body and the now the pcm. This part needs to be added to recent recalls. It is not safe to be traveling at 45mph or higher, then the vehicle shuts down and lowers speed to 10mph or less-esp. If you have no where to pull over safely (yes, this has happened to me on more than once. ) I have my car back from the recall the car to still wont start, tries to turn itself over & keeps my keys stuck in the ignition. My steering column has been busted open on the bottom in order to release the keys which is ridiculous yet my car is still not functional due to other faulty, crap, junk, trash (whatever you would prefer to list them as in this documentation) parts that I will most likely be expected to pay for yet again.
The contact bought a 2005 Saturn Ion on 12-10-04. The first 50 miles he had to take it back to dealer because the cruise control was not working. The dealer fixed the cruise control under warranty. The dealer had to get a new computer program for the car. Since then he had to take vehicle to dealer five times because the car sputtered and died sporadically. The last two times was on 9-26-05 and on 9-30-05, and on 9-26-05 the dealer replaced the automatic transmission body control, tcm, and power train module. Repaired all wiring and connectors. During test drive, the service light was still on. He believed the dealer reset the service engine light. The contact picked up the car on 9-29-05, and on 9-30-05 the check engine light was still on. The dealership replaced the engine wiring harness at that time. The contact picked up the car on 10-03-05. He has only driven the car once sine then and the check engine light has not yet come back on. The contact has talked to a field representative from Saturn several times, and he told him to got to the ok dmv.