I can't remember what the code was that I was throwing, but the bad coil pack only affected one cylinder. My guess is that the inductor broke closer to one terminal.

Could be a coil pack. If you replace the plugs and wires, the coil pack would be my next move if the SES light is still on.

The cylinders on any 1 coil pack fire at the same time, so swap the plug wire ends on the #6 coil pack and see if it moves to that cylinder. I don't remember off hand what cylinder shares the #6 coil pack but it's written on top of it.

I think...

6-3
2-5
1-4

ACDelco & Bosch iridium are much cheaper and have rebates right now so the AcDelco will be $4.50 each and the Bosch $4 each. Iridium will last 100K in a well maintained car. No need for $10 plugs. I have never seen proof they are better. People will say they are better, but I say prove it. There are three 3800 pontiac motors in my family that have gotten 30 MPG with 100K mile ACDelco iridium plugs. Take the money and get ACDelco wires from rockauto.com. or at least get the Bosch. I will tell you right now, run far far away from any ignition or brake part that says duralast. In my experience wrenching on used cars I buy or cars with friends. Duralast parts fair regularly and your car will eventually stop with their brake parts.