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How to Replace Ignition Coil 1999-2004 GMC Sierra 2500
Created on:
Tools used
7mm Socket
Ratchet
1. Remove the ignition coil
Unbolt the ignition coil
Disconnect the wiring connector.
2. install the new ignition coil
Bolt the ignition coil down.
Connect the wiring connector.
Brought to you by 1AAuto.com. Your source for quality replacement parts and the best service on the internet. In this video we're going to replace an ignition coil on this 2002 GMC Sierra with a 6 liter Vortec V8. This procedure is the same for most of the 4.8, 5.3, and 6.0 liter Vortecs in the trucks as well as the SUV's, very simple, only tool you'll need is a 7 mm socket with a ratchet and extension.
The coils on this GM V8's is pretty easy to get to. There's four of them each side, eight total, one for each cylinder. They're right up here on top. I'm going to do this one because it's just the easiest one to see and film. They're all really easy to get to though. Now, there's a harness that goes in right here. I'm going to pull back on that tab and pull up and the front wire is right down here. You twist it. Hold down. Now you can see the two 7 mm bolts on each side holding it in. One here and one there. We'll just speed it up as we're removing those two 7 mm bolts with a socket and a ratchet and an extension. Our original coil, the new one from 1A Auto, you can see it's all the same. It's going to bolt in just like the original. I'm going to speed up again as I just tight those bolts in and then tighten them up with my socket, ratchet and extension. When you tighten them you want them nice and firm. They're not to be overly tight though. Put the extension back in and then plug your plug wire right back and then just repeat for the other seven.
We hope this helps you all. 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 serve you on the internet and in person.
ICA65506
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Product Reviews
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4.69/ 5.013
13 reviews
5 Stars
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1 Star
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Plug wires, coils for 2000 GMC Sierra 5.3 liter
Robert
December 3, 2020
Not many more miles driven on the truck since installation, but so far so good. Before the swap out I was having "labored start" issues requiring multiple cranking attempts; happy to report that the new products corrected that issue. Installation was challenging, some plug/coil components being quite hard to remove/replace, so the rating is for the products and NOT the project.
Good
Albert
December 18, 2020
I would recommend this product. Very good. Would buy again. Shipped and arrived on time.
1Aauto excellence
Michael
January 18, 2021
Excellent quality parts for my 04 Tahoe and fast shipping. I recommend 1A auto to all friends and family. Thank you guys for the fast friendly service you provided. Great job keep it up.
Very Satisfied
DAMIEN
June 21, 2021
great product, works like a dream in 05 gmc yukon xl.... decent price as well.... thanks again!
Fixing my suburban
Dawnn
July 22, 2021
I love you 1a auto. Ur the best.
Great buy
STAVON
July 27, 2021
Great deal jus got wrong ones make sure u check ur vehicles to make sure. U have square or round coils
Shannon
August 19, 2021
Excellent
Good stuff
Michael
January 8, 2022
Great product.. I went with uranium spark plugs and Im very happy
bad coils
Maurice
January 1, 2023
all are malfunctioning bad my truck is saying bad coil packs orange sparks
Great value
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Daniel
February 22, 2023
Plug and play, the kit had everything I needed including the wires pre-greased with dielectric grease. I purchased them with iridium plugs that I had to adjust the gap of two of, but generally they all were set to specifications!
Good fit for 5.3 vortec engine
Tre
March 23, 2023
Worked out great.
Very happy with parts
David
May 17, 2023
Parts for tune-up of my 2001 Silverado all appear to be of high quality and fit like OEM. The first order I received for my truck came with wrong coil packs (probably my mistake). I contacted customer service and the were very helpful to process the return of the original parts and exceptional about making sure my re-order included the correct items. Thank you 1A Auto and a special thank you to the customer service rep who helped me out.
A very happy customer and student!
Dan
July 29, 2023
It's exactly what i needed for my Silverado! Also, thank you as always for sharing your knowledge and expertise in your How-To videos! They are not only very helpful, but they have also given me the confidence to repair the Silverado myself!
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