Back in November of 2003, Dr Jay posted this:
That link to the site no longer worked, but if you dropped the vci it does. so it would be:
When I ran my VIN, it came up with the following updates that were available.
12214054 12214055 N/A New calibration to correct rough idle condition
12202014 12201862 N/A Calibration to correct P1441 from setting on a hot restart.
9391254 9391248 N/A Control module calibration
Perhaps yours just needs that first update? Mine very occasionally has a rough idle, but it hasn't been bothersome enough to me to have it updated.
Black 2000 SSEi, Silverstar Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, drilled 180 degree thermostat, Intense FWI, PCM, shift kit, and 3.4 Pulley. Solid front mount.