About TRQ: TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Product Features
High dielectric epoxy and reinforced bobbins for extended service life
Rubber, Silicone, or Phenolic Resin Shell: Prevents premature boot wear
Application Specific Design: No modifications required
Complete repair to restore your engine to like-new condition
Description
TRQ ignition coils will have your engine running like new. TRQ ignition coils are manufactured to precise specifications using premium raw materials to optimize each vehicle's ignition system. To ensure peak performance, TRQ recommends replacing ignition coils in sets to prevent electrical output imbalances. All products are fit and road-tested in our Massachusetts R&D facility to ensure we deliver on our promise of Trusted Reliable Quality.
Returns: Parts with electrical components cannot be returned once installed.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
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How To Replace Ignition Coils 2003-07 Cadillac CTS
Created on:
Tools used
13mm Socket
Flat Blade Screwdriver
Torque Wrench
18mm Socket
10mm Wrench
5/8 Inch Spark Plug Socket
Ratchet
1. Loosening the Intake Manifold
Remove the oil fill cap
Remove the engine cover
Remove the 13mm bolts from the top of the intake manifold
Loosen the air intake hose clamp
Pull the air intake box off
Loosen the stud with a 10mm wrench
Loosen the 18mm bolt to pull back the bracket from the hose
2. Removing the Ignition Coil
Loosen the 10mm bolt on the ignition coil
Pry off the ignition coil sensor harness
Lift the intake manifold
Remove the ignition coil
3. Reinstalling the Ignition Coil
Insert the ignition coil into place
Connect the ignition coil sensor harness
Tighten the 10mm bolt to the ignition coil
4. Tightening the Intake Manifold
Preliminarily tighten the 13mm bolts to the top of the intake manifold
Torque the 13mm bolts to 20 foot-pounds
Tighten the stud with a 10mm wrench
Tighten the 18mm bolt
Press the intake box to the intake manifold
Tighten the hose clamp
Insert the engine cover in place
Tighten the oil cap
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and the next time you need a part for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace an ignition coil in this 2006 Cadillac CTS. It has the 2.8-liter V-6 engine, and we show you how to replace one of the harder ones, which requires you to pull up the intake plenum. You'll need new ignition coils from 1AAuto.com, various wrenches and sockets, flat blade screwdriver, and a torque wrench to put things back together.
Twist out your oil fill cap, and then pull off your engine cover. Now there's a series of 13mm bolts going all the way back, and you want to just go ahead and remove those. The ones in the back are a little hard to remove, but you want to at least loosen them up as much as you can. For the back ones, we use a small breaker bar and a shallow socket. Using a flat blade screwdriver, loosen up this hose clamp and then pull the air intake box from the front of the intake manifold. Using a 10mm wrench, just loosen up this stud and then twist it free. Then loosen this 18mm bolt. You want to loosen it enough until you can pull that bracket back.
Okay, with all five of these bolts out and that one loosened up, this bracket detached and this detached. You should be able to lift up your manifold enough to access all the coils. Loosen up the 10mm bolt on your ignition coil, and you want to get it out as much as you can and pry out on the tab on this harness and then slide the harness free. Lift up on your intake manifold and pry the ignition coil up, and now you can loosen that bolt more and pull the ignition coil free.
Now, to replace the ignition coil, we can show you on the other side. Just lower the ignition coil into place and twist the bolt back in. Make sure the ignition coil is all the way down, and reconnect the harness. You can see that if you're doing it on this side, you will need to pull that censor out. It just makes it a lot easier, and then it just pushes back in when you're done.
Once you have the harness back in place, push that clip back in. Now you can replace these bolts. We'll fast-forward as Mike does that. Now tighten each of those up preliminarily. Then just torque each of them to 20 foot-pounds. This back one, you just want to tighten firmly by hand, put the stud back in place, and tighten it up with the wrench. Then tighten up that 18mm bolt. Push the air intake box back onto the manifold, and then tighten up that hose clamp. Then take your engine cover, push it back down into place, and replace the oil fill cap.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
ICA61433
In Stock
Product Reviews
4.6/ 5
★★★★★★★★★★
44 reviews
5★
80%
4★
9%
3★
5%
2★
2%
1★
5%
★★★★★December 28, 2023
Fixed the issue
Seem to be working great, took care of the issues I was having!
★★★★★September 27, 2023
The ones for the 3.6 DI engine.
They fit the DI 3.6L engine. Many others do not.
★★★★★December 2, 2022
Bad
After 5 months of when they where put in I now have multiple miss fire code.
★★★★★September 7, 2022
Great Buy
Purchased and watched the videos - there are 2. one has you remove the wipers and shield(unnecessary) the other, gets right to it. Had I not watched/work, I would have been done in 30/45 minutes. Instead, little over an hour. So for around $200 and an hour of my time, I changed all 6 plugs and coil packs vs the $1200 the shop wanted for spark plugs and 1 coil pack. Reason for 4 stars, had to purchase gaskets elsewhere, and and a little pack of dielectric grease would've been nice.
Overall, a great buy.
★★★★★March 6, 2022
Great ??
★★★★★February 16, 2022
great parts ! car is awful never buy a Cadillac again , nor any GM product.Tanks 1a auto for great videos and parts . Warning to all never buy a GM with a 3.6 .
★★★★★October 10, 2021
coil set
Working great, my Acadia no longer sputters on hills!
★★★★★August 20, 2021
1Aauto does the trick again!
Coils and plugs did the trick! Thanks for the great video!
★★★★★July 22, 2021
Great product
Great product. Fit as should no issues.
★★★★★June 17, 2021
Outstanding Service
Excellent Quality,
Timely delivery.
Showing 1–10 of 44 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
AurelioOctober 18, 2022
How do I know if my cadillac cts is a 7 or a V to order the parts? 2 different tipe of coil. Long or short coils?
Please provide your 17-digit VIN so we can confirm fitment, thank you!
Jessica · October 18, 2022
MichaelJanuary 17, 2021
Do I need spark plug coil boot and spark plugs?
We are more than happy to assist you in locating these parts, can you provide the year, make, model and engine size of your vehicle?
Christa · January 19, 2021
ToshFebruary 22, 2018
Hey my 2007 cts has a constant ticking sound coming from one of the coils my check engine light is on and so I need to know what needs to be replaced?
We are unable to diagnose your problem, because there could be multiple reasons why you're experiencing this particular difficulty. We suggest you take your vehicle to a reputable shop close to you to identify the problem. Once you know the cause of your problem please feel free to call us toll free at 888-844-3393. We'll be happy to see if we carry the parts needed for the repair.
Adam · March 6, 2018
Showing 1–3 of 3 questions
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