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.
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
Item Condition:New
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.
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How to Replace Ignition Coil 2004-06 Chevy Colorado
How to Replace Ignition Coil 2003-04 GMC Envoy XL
Created on:
Tools used
10mm Socket
8mm Socket
Flat Blade Screwdriver
Ratchet
Socket Extensions
1. Removing the Air Intake Box
Remove the two 8mm bolts holding the top of the air box
Remove the two hose clamps with a flat blade screwdriver
Twist and remove the two vacuum lines
Pull the air intake box up and out
Twist the air intake hose collar off
2. Removing the Ignition Coil
Disconnect the locking tab with a flat blade screwdriver
Disconnect the ignition coil wiring harness
Remove the 10mm bolt from the engine coil
Pull the ignition coil up and out
3. Installing the New Ignition Coil
Insert the ignition coil into place
Insert and tighten the 10mm bolt
Connect the ignition coil wiring lead
Replace the locking pad
4. Installing the Air Intake Box
Twist the air intake hose collar into place
Insert the air intake box into place
Insert the two vacuum lines
Insert and tighten the two hose clamps with a flat blade screwdriver
Insert and tighten the two 8mm bolts holding the top of the air box
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace ignition coil. On these vehicles, they recommend you replace these coils at 100,000 miles. Also, sometimes if your engine runs a little rough and turns the "check engine" light on and you get a code that says, "Cylinder 1 or Cylinder 3 or something misfiring," that's usually a coil going bad. It is a pretty easy replacement. You'll need a ratchet extension with 8mm and 10mm sockets. If you don't have an 8mm socket, a flat blade screwdriver can help you get the clamps off as you'll see.
Working from the passenger side, you want to remove two bolts that hold the top of the air box: one here and one right here. Now to remove this, you want to remove this intake tube which is a clamp here and a clamp here. Remove that tube and then loosen both this one and this one to pull this apart. I'll speed this up a little bit. You can either use a flat blade screwdriver or an 8mm socket with a ratchet and extension to undo those clamps. This also has a small vacuum line on here. Twist and pull that off, and then this goes up, and there's also a line right back here. Just pull off of there.
This big vehicle has been sitting for a while, so I'm just using a vacuum cleaner to clean up the vacated mouse house that's sitting on the intake. Okay, then take, twist, and get this collar off here. You can see here are our five coils. Pick any one of them, and just remove the 10mm bolt. Each of them have a little gray clip that you just pull on. Use a screwdriver. There's a little tab right in the center. Push the tab down and pull the clip right off.
Then there's just a tab for your thumb. Press that. Remove the lead, remove this 10mm bolt, and then, once you have the bolt removed, just move it around, shake it up and down a little bit, and then the coil comes up and out.
The new coil from 1A Auto is exactly the same as the old one. Put it right down in. You want to just push it straight in. Tighten up the 10mm bolt. Plug your lead back in, and then put the locking tab back in place. Repeat that for any cylinders you need. The cylinder order on these is usually just from front to back: 1, 2, 3, 4 and 5. If you get a code like "number 3 cylinder misfiring," that's usually a bad coil, so you'd replace the number 3 coil.
To put it back together, put this on there. There's a little notch that should stick up right there. I've got my two bolts already kind of in there. Right here is that hose. Push that hose down first. Put this down in place. I'm just kind of maneuvering it into this hose here. Push it into place and twist this hose a little bit off. Push it down onto here. Get it good and tight on there. Hook up the vacuum hose. Use an 8mm socket to tighten up. Just inspect where the hoses go and their housings. Make sure they're nice and tight, and then tighten up our clamps. Again, you can use either a flat blade screwdriver or an 8mm socket. Then we go back to our 10mm socket and then tighten them up and you're all set.
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.
Tools used
Flat Blade Screwdriver
7mm Socket
Ratchet
1. Removing the Ignition Coil
Disconnect the ignition coil wiring harness
Pry the spark plug wire off the ignition coil
Remove the two 7mm bolts from the ignition coil
Pull off the ignition coil
2. Installing the New Ignition Coil
Wipe down the ignition coil mounting area
Connect the ignition coil wiring harness
Line up the ignition coil with the bolt holes
Insert the two 7mm bolts into the ignition coil
Push the spark plug wire onto the ignition coil
Repeat these steps for the remaining ignition coils
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace an ignition coil on this 2003 GMC Envoy XL, with the 5.3 liter V8 engine. The items that you'll need for this is a new ignition coil from 1AAuto.com, 7mm socket and ratchet, and a flat blade screwdriver.
Because this is a V8, there's four ignition coils on either side of the engine, four here, and four more here. Each one is held in with two 7mm bolts. Start off by disconnecting the harness. Just lift up on the tab and disconnect it, and then pull and pry off the spark plug wire from the ignition coil, and then remove those two 7mm bolts. Once the bolt's removed, the ignition coil will pull right off.
On the left, is the old ignition coil; on the right, is the new one from 1A Auto. You can see they're identical, and will fit exactly the same. Wipe down the area where the ignition coil goes. Reconnect the harness to your ignition coil to help hold it into place, and then line it up on the bolt holes, and replace those two 7mm bolts, and tighten them up. Reconnect the plug wire, and repeat for any of the other coils you want to replace.
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.
ICA61773
In Stock
Product Reviews
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Ignition Coil
Jason
June 6, 2017
I recently purchased in ignition coil from 1A Auto. It was very reasonably priced, and fit the vehicle as expected. I highly recommend 1A Auto to anyone who asks. Additionally, the how-to videos are top rate.
05 trailblazer ignition coil
Fernando
October 22, 2018
Direct fit and fixed me issue on the truck. Fast shipping, recived a day ahead of schedule. Thanks again 1aauto
2004 chevy trailblazer ignition coil
kenneth
October 25, 2018
Easy 15 minute install and truck ran perfectly! Thanks 1aauto.com
1st Time get Right auto Shop
H
November 23, 2018
The Product was actual the manufactory auto parts. I would truly recommend this shop to any and every body. The service was great with one exception. They need to do better on the correct time of delivery. Customer depends on delivery time especially when their auto is dismantle and waiting on their part. I feel that they should be a little more accurate, than less. over all they the best I seen online.
part after part always right!!
W
May 11, 2019
every time i order it ships fast comes on time an is the part i ordered... always great prices ...my truck is running better then ever....thank you A1
fit and started up without shakes
Antone'
May 12, 2020
Great service
All good!
Erik
February 17, 2021
Got the correct part the 1st time in a timely manner. Item looked good and got the truck up and running again, thanks 1A Auto !
Coil on plug replacement
Stephen
August 3, 2021
The part came very quickly. With the video that the site provided it was easy as could be to replace the coil. The only suggestion I have is to maybe put in a foot note to be careful of the vacuum lines. as they could be old and brittle. I had to cut mine back because it broke.
Roger
September 18, 2021
works great
TRQ parts are the best.
Richard
June 17, 2022
My neighbor, who is a mechanic, suggested that I purchase TRQ parts for my twenty year old truck. They are better parts than the original ones.
Cheap ignition coil
Wayne
December 20, 2022
Ordered three coils one went bad the next day after installation. Waiting for the others to go. Would not recommend electronics. Many other trq parts have been great except ball joints.
James
April 18, 2023
Fast delivery parts fit and worked as it should will buy more parts as needed.
Richard
March 13, 2024
Great price great product envoy running like a champ
Nathaniel
November 5, 2024
Great
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