Enhanced Efficiency: Up to 15% more energy transferred to spark plugs
High Temperature Epoxy: Enhanced service life
Faster rise times and duration
Improved throttle response
Item Condition:New
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How To Replace Ignition Coil 2002-2009 Chevrolet Trailblazer
How to Replace Ignition Coil 2003-04 GMC Envoy XL
How to Replace Ignition Coil 2003-04 GMC Envoy XL
Created on:
Tools used
Dielectric Grease
Flat Blade Screwdriver
Phillips Head Screwdriver
10mm Socket
Trim Tool Set
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.
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.
ICA71261
In Stock
Product Reviews
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4.62/ 5.013
13 reviews
5 Stars
4 Stars
3 Stars
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1 Star
11
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Chevy Ignition Coils
Jeffrey
May 7, 2021
A great purchase ! Easy ordering with guaranteed fit shipped right to my address quickly. An easy.Install went off without a hitch. Performance immediately improved.
Thanks for the great product and service !
Very pleased
Rachel
June 28, 2021
I have ordered parts from 1a auto 1a auto a few times, and every time they have been the correct fit. Shipping is always fast. And parts are a very inexpensive. I will continue to use 1a auto for my parts.
2001 Silverado 2500 now runs like new
David
August 2, 2021
Awesome product! Great price! Only took 15 min's to swap out all 8 and the truck runs like new.
Local shop told me I needed a new intake ??? Figured out the issue myself and replaced all 8 ORIGINAL ignition coils (they lasted 20 years!) These new one fit perfect and fixed my issue.
Ehhh
Jacob
September 25, 2021
Didnt fit my truck like it said it would but I ended up doing a little riggin and zip tie and it works lol
Great Price for Coil Pack
James
January 4, 2022
These plugs are working great, very slight shudder but worth the price.
Good Product
matt
February 23, 2022
Good product, Easy to install. I noticed a difference in idle and performance immediately. I also went with a larger sparkplug wire (8.5 mm) as well.
Rojelio
September 1, 2022
Easy to install and definately improved my mpg
Engine idles smoother and feels a bit more torquier, with added torque transmission isnt going back and forth with gears
Truck runs and delivers power like new again
Worth the buy
Kaven
November 6, 2022
Amazing! I was able to tell the difference in power from my previous ignition coils to these. The price is reasonable. I would order again
Jake
March 20, 2023
Had three or coils go out within months. Had lost quick start up bad fuel Econ. Replaced she fires right up and fuel eco is better than ever
I would definitely recommend these coils for those who want increased performance and mileage
Travis
July 2, 2023
The part was an exact fit and gave my truck noticable power and mileage
Lasted less than a year
Chris
July 23, 2023
It's been less than a year and I just had one of the coils go out. I replaced my original coils plugs and wires on a 2002 GMC Sierra with 220,000 miles on it with this set. I didn't notice any difference in performance with the new ones. . It does not give me much confidence in the TRQ brand.
Highly recommend
Bobby
November 18, 2023
Look good and works great
Jose
January 2, 2024
Install all 8 coils and got better performance and my gas mileage got better
Customer Q&A
Will these fit 2000 gmc sierra 5.3?June 10, 2021
Mike B
10
This kit is listed to fit the 2000 GMC Sierra 1500 V8 5.3L (8th Vin Digit Z).
June 10, 2021
Jessica D
I would like to know the specifications of these coils, t r q set of 8 1 c a 71261-45,000 volts?July 1, 2021
Kenneth M
10
The actual voltage is not listed or available.
July 2, 2021
Cristina P
Will these fit my 2001 Silverado 4.8?July 6, 2021
John D
10
Yes, according to the information you provided, this part will fit your vehicle with 8th Vin Digit V.
July 12, 2021
Adam G
ARE THESE COILS MADE IN CHINA?July 10, 2021
John D
10
We do not have that specification available. These are manufactured by TRQ. TRQ is a high quality, high-end name brand that we offer and back with our 1A Auto Limited Lifetime Warranty.
July 10, 2021
Jessica D
What symptoms did you all have that made you change these my suburban shakes and is low on rpms loss of power I've changed the wires improved a bit I am considering changing the coils and also the plugs?August 13, 2021
Tonny G
10
My 2004 Tahoe had a loss of power and the shakes also. I replaced the plugs and wires but was still having an issue and a misfire code. Then after changing the coils it cleared up.
August 13, 2021
Robert M
Will they fit a 2004 6.0 vin u ?August 18, 2021
John D
10
We would be happy to check for you if you are able to provide us with your full VIN.
August 18, 2021
Emma F
10
I put them on my 2006 Silverado 2500 6.0 with a U VIN
October 12, 2021
Geoffrey C
Will it work on 03 Tahoe with 8th digit vin Z ??June 12, 2022
Saul H
10
These will fit a 2003 Chevrolet Tahoe V8 5.3L (8th Vin Digit Z)
June 13, 2022
Cristina P
Can they fit a Chevy 1500 express van?December 13, 2022
John D
10
Please provide your 17-digit VIN so we can confirm fitment, thank you.
December 15, 2022
Jessica D
What wires should I run with this coil ?April 24, 2023
Will this fit a 03 sierra 4.8 mine are square and this look roung?June 2, 2023
Jorge L
10
Hello, we would be happy to confirm fitment, could your reply with your VIN#, please?
June 3, 2023
Ricale A
Can I use on 2003 yukon denali xl 6.0?October 31, 2023
Tai N
10
This set is intended for models with square shape coils and will not be correct if you have round shape coils, please confirm this information before placing your order.
October 31, 2023
Nick R
Customer service
877-844-3393
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GMC is a registered trademark of General Motors Company. 1A Auto is not affiliated with or sponsored by GMC or General Motors Company.See all trademarks.
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