2004-2008 Grand Prix - Change Spark Plug Wires

[@milesdavis1630]

Thanks for the video! I just changed my spark plugs on my 2008 Grand Prix the other day and I couldn't have done it without this guide. The only thing I would add is since I'm definitely a novice (and maybe it's common sense and I'm still nervous about to trying to fix my own car so I don't want to be too adventurous), it would've been helpful to see how you pulled the bracket off. I changed them without taking it off, but I banged my hands up. Just a thought, but thanks again.

[@NexusAuto]

No problem at all. Glad to hear the video was so helpful. I did show the brackets being removed, but are you talking about showing it fully/a better angle?

[@AmandaElmer-l4b]

The two of you didn't finish are the two I needed to know the order of on the coil packs??.. bummer 😕

[@NexusAuto]

@AmandaElmer-l4b sorry, I hear that. I have a video on wiring the coil packs...it will hopefully help out kzbin.info/www/bejne/aICvfKapfc6sgrcsi=Mx5WzizKlcbhFnEP

[@larrya703]

Again, I would iterate dielectric grease is an electrical insulator and does not conduct electricity. So it will NOT help promote a good electrical connection. Applying a glob a grease directly where you trying to make a specific connection is not a good idea. If you stuff a glob into a connector, the metal terminal inside will never be able to grip the spark plug top and the connector will never connect properly to the spark plug, this can cause misfires. To apply dielectric grease, applying a light smear inside the connector bottom seals (I use a cue tip), or onto the base of the spark plug insulator only. This will help prevent arcing if moisture accumulates in the boot. The grease will also help preserve the rubber and assist it with not becoming to overly attached to the spark plug when servicing again in the future and it needs pulled off. You can apply the grease in the same manner to the coil pack end of the plug wire, but it really doesn't need it at this end of the wire.

[@NexusAuto]

Hi Larr, Thanks for watching and writing in. I definitely don't think you're trolling...that's more of those dumb comments that add no value to anything, and luckily, I do not get many of those! :) I appreciate you writing in and putting up some advice. Advice is always good...no one can know everything and I am always learning something new. I would like to address it. I do not want to post this across all 3 videos, so I will just post this on this one. The information you are posting is exactly right. Dielectric grease is an insulator and not a conductor, but through insulation, it creates better conductivity with the connected parts. Maybe I should have directly clarified that, but I did not directly indicate that it was for conductivity either. I stand by what I did in the videos. It is what I have done for years and there has not been an issue. No misfires, knocking, etc. In my early years, waaay before KZbin, I had a 2 different mechanics question the logic of applying directly to the coil openings, as this was a standard 12 volt connection, but I always applied the logic that since only a very small amount ever enters the thin coil connector opening, it would not be an issue, and it hasn't. Mainly, it would just insulate around the base of the connections, and it has worked out so far. Some other mechanics(at the time) agreed with this. However, no mechanic has ever questioned the logic of applying it directly into the boot of the wires(well, to me, anyways) as I had done in this video, as the high voltage outputs (approx 30k, give or take the car)can easily overcome any impedance that the dielectric provided. That said, as mentioned above, you are not wrong and that is great info, and there would be nothing wrong with doing it the way you described. In fact, for those watching, I would recommend either-or, but yours would be a safe bet for those unsure of how much dielectric to apply and a much more proper way to apply the grease. As I type this, I realize it may be good to post this to the other videos, so I will do that. To sum up to other watchers, the method mentioned by Larr is sound in the sense that you can apply a dab around the orange insulators or in the ignition wire boot along the inner walls. This would be a great way to apply the dielectric grease while performing this job. Thanks for watching and advice.

[@t2kbloody2]

Will this help with the p0303 code for misfire cyclinder 3. Most people say start with plugs and wires.

[@NexusAuto]

It *could* help, but that's not for sure. A misfire can be spark plugs / wires / coils, but it can be a fuel injectors, bad compression, bad sensor, etc. I will say that the plugs / wires are the most common issue, but it may not be your issue. Definitely keep that in mind.

[@corvette-pr8tc]

i just did a 2008 grandprix didnot remove nothing but plugs ans wire no need to remove any thing else back driver side plug reach from passenger side to remove all the rest from front and drive side can be reached took me about half hour new plugs and wires

[@NexusAuto]

Thanks for leaving feedback and for watching the video...hopefully it helped out for sure. First, to clarify, there is no 2009 Grand Prixs. 2008, maybe? Irrelevant, really, but just wanted t make sure we were on the same page with cars. Glad you were able to do everything without needed to take off the dog bone bracket and that little seemingly useless bracket on the right side of the engine. For me, I could not get the wires through the dog bone bracket, and I could not get that last wire through the gap between the block and the little bracket on the right, necessitating the need to remove then. Not sure if there was small changes from my 2005 to 2008 that allowed for more room, but I could not do it without removing the 2 brackets for sure on my 05 base model. But I had a few people mention that they were able to do it without removing the brackets. Wish I was that lucky lol. In any case, better to show someone and they not need it, than to omit it and someone encounters the same issue. Thanks again!!

[@corvette-pr8tc]

oops sorry it was 2008 my bad on typo@@NexusAuto

[@NexusAuto]

@@corvette-pr8tc oh no problem at all. Just wanted to be sure!

[@corvette-pr8tc]

@@NexusAuto great video and way to show incase some encounter these issue keep them coming

[@NexusAuto]

@@corvette-pr8tc awesome, appreciate that feedback! Thanks!

[@kingavery8918]

Question can I use a 2005 grand prix lower and upper intake manifold on a 2006 Pontiac.

[@NexusAuto]

Yep it will, for like models, ie non superchargers upper and lower are compatible between years, but not you can't use supercharged upper and lower on non supercharged, and vice versa

[@thenorth398]

Man I have to change my spark plugs and all the wires were fused to the spark plugs. They would not come off i tried everything to get them out but they were just impossible to take off. Any suggestions?

[@NexusAuto]

They are tough to take off for sure, even on a normal day. If you tried everything (twisting while pulling, rocking the wires back and forth at the boot as you pull, using a pliers on the boot, etc) the next bet is really to get a spark plug wire tool. There are many to choose from, but just one that is easy to use and grip the wire is what you need. Here is a link through Amazon for reference www.amazon.com/s?k=spark+plug+wire+pliers&crid=3RCA8O9BDNEKP&sprefix=spark+plug+wire+%2Caps%2C176&ref=nb_sb_ss_i_10_16 hope this helps.

[@Set_Apart313]

So should I change my spark plugs and wire together ?

[@NexusAuto]

You don't have to. But it doesn't hurt to do it. You'll have the plugs out, if it's been a while, you can do the wires too. But not a necessity if the wires are working ok

[@Zachsgreatchannel]

Taking off the front dog bone bolts and jacking up from the oil pan gives a lot more access in the back

[@NexusAuto]

Absolutely would help. However, many 'novice' mechanics (to whom my videos hopefully cater to) are not comfortable with taking off the dog bones and jacking or ratcheting the engine. I figure, those who know how to jack or ratchet a 3800 series engine, wont be looking to my videos for help anyways.

[@MyPat95]

Damn just a couple of month late haha. I had to do this on my 2006 Grand Prix back when I had it and it was hell I gave up and went to the shop haha. Once again great vid as always man!

[@NexusAuto]

Damn, close but just missed it lol. But thanks for watching as always! Wish I had these out when you had your GP LOL

[@geodude6244]

My struts broke exhaust is ready to fall off and i need plugs and wires lol

[@jhstieglitz]

I did my kids 2005 GP plugs then the car started throwing codes. Now I’m going to try replacing the wires. (It’s getting 10 MPG). It currently has the metal spring heat shields. You didn’t really elaborate on them. Are they unnecessary? Debating whether to remove the plugs to check for damage while I’m replacing the wires. I’ve replaced the fuel tank pressure switch, the MAP switch and still throwing misfire codes 😣 Any tips would be great. Thanks for the video.