2003 and 2004 Ions used a 5 speed Aslin auto. You will find the same tranny in some Saabs, Opels, and the Nissan Maxima. It had a few minor issues with shift logic. 2005 saw it replaced with a less sophisticated but smoother shifting 4 speed auto used in the Cobalt.
For most it is not an issue. It is most prevalent at startup. The Ion revs fairly high at startup and should be give 30 seconds or more to idle down before shifting into gear. If this "Shift flare" is more prevalent a Saturn dealer may be able to update the firmware, which should improve things somewhat.
Good luck and let us know. :)
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Friday, May 5th, 2006 AT 11:12 AM