It could be the ignition control module. It is located under the ignition coils. This is something you could replace yourself. It really isn't too hard of a job. However, if you have the diagnostic trouble codes that were pulled, let me know what they are so I can confirm a couple of things.
Here is what I suggest: Remove the module and take it to a parts store. Many stores have the ability to test this component. Have it tested. If it's good, then reinstall it. If it's bad, then replace it. Keep in mind, it could be a coil also. That is why I need to know the codes. There are three coils. Each one provides spark to two cylinders at the same time. If you have two cylinders with a misfire that function from the same coil, I would think it's a coil.
If you look at the pics below, I provided the directions for the removal and replacement of the module. Make sure to pay attention to which spark plug goes to which coil. They must be replaced in the exact positions they are removed from.
Also, let me know if you notice any strange odors from the exhaust. If you ran the vehicle for an extended period of time with a misfire, there could be a problem with the catalytic converter.
Let me know what you find or if there is anything I can do to help.
Images (Click to enlarge)
Monday, August 16th, 2021 AT 9:50 PM