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Why is one of three coil packs not working because 2 are This a 1993 Grand Prix 3.1 engine?

It is unlikely that one coil pack would not be working because the other two are. Coil packs are independent of each other and should not affect each other's functionality. If you have a misfire, it could be due to a number of reasons, such as a faulty spark plug, ignition coil, or fuel injector. You will need to diagnose the problem to determine what is causing the misfire.
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