2015 Equinox spark plug specs? - TerrainForum.net: GMC Terrain Forum
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post #1 of 15 (permalink) Old 09-11-2018, 11:52 PM Thread Starter
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2015 Equinox spark plug specs?

Where can I find the gap and torque specs for my Equinox? It's an LT AWD 4 cylinder.
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post #2 of 15 (permalink) Old 09-12-2018, 12:22 AM
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The spark plug gap .040, it is highly recommend to use OEM plugs in the terrains and equinoxs. the OEM plug for the 4 cyl is ACDELCO 41-108, they come pre-gapped. The torque specs for the plugs is 12-15 foot lbs.

Last edited by Daedra; 09-12-2018 at 12:25 AM.
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post #3 of 15 (permalink) Old 09-12-2018, 12:43 AM Thread Starter
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Thank you! So if I buy those, I don't need to mess with the gap at all? Also, where does one find this info for future reference?
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post #4 of 15 (permalink) Old 09-12-2018, 12:59 AM
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Yes OEM ACDELCO plugs come pregapped, you do not have to mess with it. They are also running a rebate on those plugs, you get $3 back per plug, so they are dirt cheap. The info for the plugs can be found in your owners manual on page 339 (section 11-12). The torque specs I found on the fourm from multiple trusted sources. I recently did my plugs and it was a piece of cake.



Rebate for OEM plugs link
https://www.rockauto.com/Images/Curr...ebate_form.pdf


How to video for plug replacement. it is for a 2011 terrain but should be the same on a 2015 4cyl equinox.
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post #5 of 15 (permalink) Old 09-12-2018, 01:05 AM
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Another thing worth mentioning, The OEM plugs do not need anti-seize as the guy in the video uses. You can use it if you want, but it is not necessary because the plugs come with a coating applied to the threads in the manufacturing process. GM recommends not to use anti seize on the plugs
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post #6 of 15 (permalink) Old 09-12-2018, 11:32 AM
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When are you guys replacing the plugs on these things? I used to go by the 100,000 recommendation, but found the plugs worn heavily on my 2011 5.3L at 65,000 miles. So i've vowed to change them a earlier.
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post #7 of 15 (permalink) Old 09-12-2018, 05:03 PM Thread Starter
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Thanks Daedra! Very helpful. I'm gonna tackle this job tonight, hopefully it goes well.

As for whoever asked when I'm replacing them, I'm at 70k miles, and cylinder 1 is misfiring, so I'm hoping this fixes the issue.
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post #8 of 15 (permalink) Old 09-12-2018, 05:03 PM
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When are you guys replacing the plugs on these things? I used to go by the 100,000 recommendation, but found the plugs worn heavily on my 2011 5.3L at 65,000 miles. So i've vowed to change them a earlier.
I've pulled the AC Delco Iridium plugs at 110K miles on a 3800, and at 178K miles on a 3400. The plugs in the 3800 were still in spec and looked good. Replaced anyway. The 3400 still had factory plugs. At 178K miles, they were pretty shot, but still functional. I haven't pulled my 5.3 plugs yet, but it runs great so I didn't feel a rush on it.

Did your 5.3 have Iridium plugs? That's really weird if they were shot at 65K miles.

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2011 Silverado 1500 LT, 5.3L 4X4
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post #9 of 15 (permalink) Old 09-12-2018, 05:51 PM
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I replaced mine at 92000. The car ran fine and plugs were in great shape. They really didn't need to be replaced but I got a good deal on them and with the $3 per plug rebate, I figured why not go ahead and change them since it was so cheap.
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post #10 of 15 (permalink) Old 09-12-2018, 06:00 PM
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Quote:
Originally Posted by buggsy View Post
I've pulled the AC Delco Iridium plugs at 110K miles on a 3800, and at 178K miles on a 3400. The plugs in the 3800 were still in spec and looked good. Replaced anyway. The 3400 still had factory plugs. At 178K miles, they were pretty shot, but still functional. I haven't pulled my 5.3 plugs yet, but it runs great so I didn't feel a rush on it.

Did your 5.3 have Iridium plugs? That's really weird if they were shot at 65K miles.
Yes the 5.3L in my '11 (the one I'm speaking of) had irdium plugs (Factory plugs.) it was a poor running vehicle tho, so it may have had something to do with it. My '04 5.3L had good OEM plugs in it at 100,00 when I changed them too.

My '99 3800 ran great at 155,000 too on the OEM plugs.
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