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Q: 2005 cobalt, shuts off while driving.diagnostics code read "emmisions" on 2005 Chevrolet Cobalt

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
put new catilyic conv.(April), coil pack(march), new sparkplugs(march), cleaned throttlebody(march) car ran good till june, still shutting off,no warning, while on freeway.Today, started vibrating hard, after tapping coil pack again restarted. checked motor mounts-not loose, engine came on and stayed on.
(1) Answer
When you changed the coil pack, did you replace the Ignition Module? What were the actual Code numbers stored?