94 dis module location

A slight miss when idling, and check engine light comes on when driving sometimes.
Have the other ignition items been checked, spark plugs, wires, coilpack? Again I've never seen a later model SC have a failed DIS module.

Yes, new plugs gaped to .40, wires, and new coil pack. Checking for a possible vacuum leak somewhere.
Have you scanned for codes? My 89 does the self check with code flashes when connecting the eec plug to the ground wire next to it, not sure if the '94 does the same?