Ignition coil pack replacement?

2005 CADILLAC DEVILLE
100,000 MILES • V8 • AUTOMATIC
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MEGANNELSON1008
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I'm trying to change the coil pack for number 2. I took the one off and the one it wants me to replace it with connects from the bottom not the side and the clip doesn't fit in it. Do I have to buy all new coil packs for all of them and a new wiring harness?
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Jan 28, 2025 at 11:22 AM
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STRAILER
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Hmm, neither of these coils looks correct, I am wondering if a different engine has been installed? here is what the coils are supposed to look like.

https://amzn.to/4hBXBGP

Check out the images (below). Please let us know what happens.


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Jan 28, 2025 at 5:45 PM
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MEGANNELSON1008
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It's a 2005 Cadillac Deville v8 with a NorthStar engine.
Jan 29, 2025 at 5:52 AM
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MEGANNELSON1008
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The wiring connector goes in from the side of it and the replacement one they gave me it comes up from the bottom. But it's a different connector because it doesn't fit when I try to plug it in from the bottom.
Jan 29, 2025 at 5:53 AM
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MEGANNELSON1008
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I read somewhere that's it's the original coil pack. That came with the car.
Jan 29, 2025 at 5:54 AM
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STRAILER
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The coils might have been updated, this is what they show in the manual. They may have an updated connector, but you will need to replace all of the coils. I would call the part department at Cadillac to see what they say.
Jan 29, 2025 at 8:46 AM