How To: Replace Spark Plugs And Coils On A 3.6L GMC Engine - Easier Than It Looks!
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- Опубликовано: 8 июл 2024
- In this video I demonstrate how to replace spark plugs and ignition coils on a 2012 GMC Acadia with a 3.6L V6 engine.
This is the same engine that is found in the Cadillac CTS and STS, Buick Enclave, Chevrolet Traverse, Saturn Outlook, Daewoo Veritas, Holden VE Comodore SV6, Buick Lacrosse and Chevrolet Camaro. Model years that used this engine include 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017 although model years range by vehicle line. 
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This was so much easier than taking the manifold off and saves money not replacing intake gasket (kit). The back side requires more feeling than seeing.
I found allowing the rear coils to rotate slightly was easier to reconnect the wiring clip; put the bolt back in last. Take care not to drop tools or the bolt. Using a 1/2 drive breaker bar made loosing the rear spark plugs much easier. This job took me about 1 hour.
Thank u told my neighbor prob can work around the intake to replace all coils, looks like I found the video I needed to be sure. Thank u
2017 GMC Acadia Limited with a 3.6L. The front 3 were easy, 20 minutes. The back 3 were very difficult, 2.5hrs later. The hardest part was getting the wire harness off of them. It is not was easy as the one in the video. You need to put something inside the connection to release the lock. After I figured that out, it was not that difficult. Just make sure the connector and coil do not go down the port together or you will be scratching your head like I did. Where the heck did the connector go?? Had to take to the coil back out and "surprise" the wire connector was there. I used Autolite Iridium plugs for mine. Hoping they last another 100,000 miles. Thanks for the DIY video.
Great job on the video, very informative and easy to understand and follow.
All the other videos I seen they take the whole intake manifold off. Cool to know it’s possible without doing that, not sure if it’s the same with a 2013 or not
#2 cylinder's (front on passenger side) coil wouldn't clear the intake manifold due to boss sticking out there that is part of the manifold. What position of the coil do I need to do to get that coil out? Thanks. I have 2009 Acadia
Should the battery be dead when replacing ignition coil
Try that on a 2009 Buick enclave , 3.6 ltr , you have to remove the top of the motor to get to any of the plugs or coils .
no u dont use some small extension tools and u can do it w/o taking that off i have a 2008 and i did it my self
Nice video. I'm curious about the high tech wood you used to gap the plugs. Is that available at any auto parts store, or do you have to order it online?
How many miles were on the old parts?
They look different because the iridium's look like that out of the box basically
Came here to say this also
@@BrianMyers7 unfortunately my neighbor's 3.6 u couldn't work around the intake but it only took about 10-15 min to get off. He didn't wanna hear about the iridium's tho lol he's like no they're worn out lol
His was 2011 enclave fwd 3.6
Agree they are really not worn. The center electrode has the pointing shape brand new. He bought different cheaper plugs so that's why they look different.
Do you have to use a torque wrench , what torque do u use?
No u don’t need to use torque wrench . Just make sure there snug. Around 15 ft pounds
will this work for a 09 gmc acadia v6 ? someone said you have to take off the manifold
with some small extension tools u can do it w/o taking that off
Do you have to set the spark plug gap or no ? Because I’m attempting this and wanna know
Yes. Set the gap.
Aside from spark plugs what other parts should I get
All of them 😂
Anti seize compound would be highly recommended.
The OE Plugs are Iridium Plugs. They electrodes are small and they are to last for 100,000 miles easy.
the plugs you went with are low cost, maybe last 1/3 of the length. Jus sayin
Do the coils matter how you put them in?
If you're asking whether it matters which coil is installed on which cylinder, the answer is no. Any coil can be installed on any cylinder.
It doesn't. It is also recommended to move the back ones to the front to extend the life of the coils. It's because the back ones run hotter than the front so rotating them will distribute the wear.
Do you put dielectric grease on the plugs?
It's not necessary, especially with COP ignition, but I do use a little dielectric grease in the coil boot before assembling.
3:44 into the video, you will see he needs to take that part off to get to one of the front coils out. I don't understand why his connections just slid on & off and I needed a small screw driver to have mine released. That to me, especially in the back, was the biggest pain in the a$$!!! It is NOT as easy as he makes it look!!!!
Sometimes it's luck. I've had some things go easier than expected, and other things that should have been easy go horribly wrong. Been doing this 20+ years and both experience and luck are factors.
suggestion- lose the long shots and get the camera down in there where you're working so we can see exactly what you're working on, like you did when removing the plugs. The coil removal left me scratching my head as to what the hell you were doing in there. Same with the non-existent back end video work. If we can't see it, we can't learn it. And, try looking at the camera lens instead of yourself. That's really distracting.
looks like you used cheap plugs on it, the oe ac delcos comw pre gapped just fyi
I always gap new spark plugs even if they come pre-gapped. You never know if they got banged around while shipping. These plugs were very close to correct, so there wouldn't have been issues if I just installed them out of the box.
always check your gapping. if they rattle around in the box they can be off. seen it a bunch of times bud
You can see the boxes in the video. He used AC Delcos.
There is NOT enough Room to reach the back of th engine to change the other 3 spark plugs
behind , i am surprised how could your handsgo into that extremely Narrow space ?!
I just shove my arm in there
You gotta take the intake off these guys are full of shit
The gap comes set at the factory. You damaged your plugs.
This is coming from a certified mechanic, ALWAYS check the gap it takes 5 minutes, dont be lazy.
Bullish! The front plug on the left is impossible!
Yup
Just move the coil wires
I think I know why. The vehicle in the video is a 2012. The 2012s have a plastic intake manifold and my 2009 has an aluminum intake manifold. The aluminum intake has a different shape and makes it impossible to get the front passenger coil out.
Bullshit you gotta take the intake man off, the gaskets are expensive too just fyi
I did it without removing the intake. It's easy.
Depends on the year. I think the earlier 1st gen Acadias you have to take the intake off, but the later part of the 1st gen you do not.
Someone calls bs yet a video right in front of them showing them how 😂
It's possible that there maybe slight variation in the amount of space with different year models. He obviously did it without taking the manifold off. But yes if you decide to remove the manifold it is recommended to replace the manifold gasket.
On the 1st gen with the aluminum intake, It has to come OFF. IJS