If a coil pack dies the car will generally quit and won’t restart, especially if the engine is warm. When first diagnosing the engine remove a spark plug and still connected to the spark plug wire, lay it on the engine. Crank the engine over and look for spark to jump across the plug. This is a 1999 Chevy Cavalier with a 2.2 liter 4 cylinder engine. The engine quit quickly and would not restart on this car. The next step was to check the 12 volt power wire that powers the coil pack. After disconnecting the plug and checking the wire, there was power to the coil pack. This eliminated the possibility of a fuse or the ignition switch.
The first thing that will need to be removed to access the coil pack is the air intake tube. Be careful to not pull the air temp connection loose, the intake should be safe as shown in the picture.
With the air box tube removed it is easy to see the two coils located in the middle of this picture. Two spark plug wires come out of each coil but will not need to be removed. First remove the top and bottom bolts that hold each coil on to the coil pack. Then pull the coil straight out from the plate being careful to not bend the tabs at the bottom that plug into the coils. Then remove the two electrical plugs that plug into the top of the coil pack.
After the coils are loose, the coil pack will come loose from the aluminum mount on the engine’s cylinder head.
Here is a clear view of the coil pack and all the electrical connections to the ignition coils and components. Just reinstall the new ignition coil pack opposite of dis-assembly.