Pip4642

[-Ray-]

Please use the mileage option only if you have this issue. I want to see if miles has anything to do with drive line boom.
If you do not have this issue, please use the last poll option.

Mileage and date of build if you have it.
You can find the build date on a metal plate inside the engine bay.

EDIT: I added a poll option for those to respond that they don't have any issue.

Thanks

[99-LS1-SS]

4000 miles (Started around 2000 miles)
Not sure of the build date.
2009 GXP M6

[mtolivecracker]

yes, it started early around 1000 miles, now has 2700. 2009 GXP. My 08 GT did not have it at all, at any time.

[Devilish34]

Can we change the last to I just jinxed myself?

10k no issues....yet

[jnak]

No issues so far, about 27,000km or 16,000 miles. I do have a slight vibration at highway speeds but I'm also getting the front passenger side strut, mount and lower control arms replaced so I suspect there is an alignment issue right now.

[GeoffA]

nothing yet, 1900 miles even...

[WickedMom]

Mine was almost from the start, maybe about 300ish miles...
I had the driveshaft reindexed at about 3k miles with little or no change, it seems to have gotten worse in the last 1k miles. My build date is 8/08.

[-Ray-]

My build date is 11/07.
No driveline issues. I'm at 21000 miles.

[GM_Fan]

Mine was built April of 2008. I noticed mine at about 1500 miles. It could have been there right from the start. I didn't get my car up to extended Interstate speeds until this spring. My vibration starts at around 62mph and becomes noticable at around 68 and a PITA by 73+mph.

New tires and alignment plus indexing the driveshaft 2X by the dealer has made it much more bearable to their credit.

[SRG963]

I've experienced a "boom" once when I had a car full of passengers. I think the drive shaft banged against the floor board (that's what it sounded like), but I'm not positive.

[g8_795]

No issues here.
22k miles.

How do you determine the build date? It is an 888, and I bought it in March of last year.

[-Ray-]

It's on a metal plate on the drivers fender. I'm guessing yours was built 11/07 also.

[99-LS1-SS]

Mine was built April of 2008. I noticed mine at about 1500 miles. It could have been there right from the start. I didn't get my car up to extended Interstate speeds until this spring. My vibration starts at around 62mph and becomes noticable at around 68 and a PITA by 73+mph.

New tires and alignment plus indexing the driveshaft 2X by the dealer has made it much more bearable to their credit.

EXACTLY how mine is. Same speed and everything.

[majesticix]

15,500 miles here with no problems. Haven't checked the build date, but I'm thinking it's an early one ;)

[wreckwriter]

17K, no issue yet.

[Panzer Leader]

Possible solution, grease the drive shaft by driving it up GMs ASSS! Thanks for letting me vent.

[MitsukiGT]

I am not sure if I have this or not. My car has always had some vibration, but it hasn't gotten any worse and I am at 11K. Not sure the build date, but bought in Feb 09 (it is a 2009).

[mtolivecracker]

wait, so im reading this post by MANOFSTEEL.

The PIP descriptions says:

There may be either a boom noise or vibration and in some cases both a noise & vibration detected in a very few 2008 & 2009 G8's. this condition may be detected by customers at speeds of 55-65 MPH on either 08 or 09 G8s. The noise could be described as a low frequency boom or moan noise (not a whine) coming through the body. The vibration is generally felt in the seat or the floor pan. the condition could be caused by either a misaligned center support bearing assembly or the prop shaft mounting to the differential yoke.

My steering wheel shakes and how i can tell its happening. and it was before every touching the steering column for headers install. Same issue?

[99-LS1-SS]

wait, so im reading this post by MANOFSTEEL.

The PIP descriptions says:

There may be either a boom noise or vibration and in some cases both a noise & vibration detected in a very few 2008 & 2009 G8's. this condition may be detected by customers at speeds of 55-65 MPH on either 08 or 09 G8s. The noise could be described as a low frequency boom or moan noise (not a whine) coming through the body. The vibration is generally felt in the seat or the floor pan. the condition could be caused by either a misaligned center support bearing assembly or the prop shaft mounting to the differential yoke.

My steering wheel shakes and how i can tell its happening. and it was before every touching the steering column for headers install. Same issue?

If your steering wheel shakes you need to have your tires re-balanced. My steering wheel is solid as a rock but my car shakes so bad I can't see out of the mirrors at 70+ mph.

[GeoffA]

If your steering wheel shakes you need to have your tires re-balanced. My steering wheel is solid as a rock but my car shakes so bad I can't see out of the mirrors at 70+ mph.

:hmm: Mines the same way with the mirrors but I thought it to be just the added rumble from the headers and the wind...

I'll have to look more closely into this. It could possibly be not related.

EDIT:

It is not related, I don't have this problem, I'm blamming the wind... I drive fast

[majesticix]

wow, that's no good.

[polo]

I bet more people have this problem than actually realize. I've got a Boom noise that happens every so often, but I'm assuming that this isn't related and is no big deal (until I get the shake).

[caretaker]

32,400 miles - build date 12/07

No drive line problems.

For that matter none of the problems
others have had at all.
Never been back to the dealer.

[95_9C1]

I have 800 miles.

No issue currently with my drive train.

[The Commodore]

The only shake or vibration I get is from the DOD. I have 12k miles and have the mods in my sig.

I will find the build date and update this post.

[mfox]

Wow, You guys are lucky!
I'am going to sell my G8 soon because I'm sick of fighting with my dealers regarding the steering wheel shake!!

[bobyoung]

I have a U-joint going, it started at probably 3000-4000 miles, I have 15,000 on it now. I hear a clank when I shift into reverse (classic U-joint noise) but no boom and no vibration at least yet. I'm going to try to get it fixed this week. I couldn't check any of the options. Funny thing is this is the first U-joint that I've had go one me since I owned my last car with a 2 piece drive shaft, it was a 61 bubbletop Chevy which I had in 1971.

[MANOFSTEEL69]

Build date 1/08.
According to GM there was a bad batch of drive shafts from the supplier. Hooray! :(

[G8GTlawride]

01/08 build date, 5300 miles, no issues yet.

[Chewy]

Build date 1/08.
According to GM there was a bad batch of drive shafts from the supplier. Hooray! :(

That's a GOOD thing Jay! That means they know what it is. Weird that it shows up late like this. I wonder what "BAD" means...

Chris

[GTPprix]

That's a GOOD thing Jay! That means they know what it is. Weird that it shows up late like this. I wonder what "BAD" means...

Chris

Out of balance.

[Chewy]

Out of balance.

I find it off that it just all of a sudden after several thousand miles (in some cases) becomes out of balance. A tire I TOTALLY understand as it's a consumable but a drive shaft should never lose balance.

[G8GTlawride]

Could someone "in the know" post the torque specs for all the bolts associated with the driveshaft? Especially the carrier. I'm going to climb under and check all of them for the proper torque.

Sure is a lot of mystery around the "Permanent Solution" GM is working on...

[GTPprix]

I find it off that it just all of a sudden after several thousand miles (in some cases) becomes out of balance. A tire I TOTALLY understand as it's a consumable but a drive shaft should never lose balance.

The issue is the supplier apparently plant shipped a batch of driveshafts with improper balance. I have also heard grumblings about weights were improperly applied and they can come loose or off completely however I have not seen that particular issue personally. There are other issues that can also cause similar conditions however this one is the known one as of right now.

[GTPprix]

Sure is a lot of mystery around the "Permanent Solution" GM is working on...

Not really its just a rebalanced stock shaft.

[grandmacpubah]

wow chris is the man...is this specific to a VIN range?

[GTPprix]

wow chris is the man...is this specific to a VIN range?

I dont believe so, its two different issues really so its hard to tell. The problem is there is another harmonic resonance issue being worked on right now (there is a PIP stating to not replace anything till the fix is determined) that also has similar symptoms.

In fact I saw a car yesterday that the shaft was replaced with the new balanced unit and it still had the resonance/boom issue only at 70-73mph and you couldnt really hear it if the HVAC was on.

[G8GT594]

I dont believe so, its two different issues really so its hard to tell. The problem is there is another harmonic resonance issue being worked on right now (there is a PIP stating to not replace anything till the fix is determined) that also has similar symptoms.

In fact I saw a car yesterday that the shaft was replaced with the new balanced unit and it still had the resonance/boom issue only at 70-73mph and you couldnt really hear it if the HVAC was on.

Great... That means i won't be able to hear it over my exhaust if im having this problem. Dude.. your BBM blows :(

[GTPprix]

Great... That means i won't be able to hear it over my exhaust if im having this problem. Dude.. your BBM blows :(

My BBM is fine my phone was off I sent that info like two hours before I turned it off LOL :)

[G8GT594]

My BBM is fine my phone was off I sent that info like two hours before I turned it off LOL :)

Dammit I was in class. Starts at 6 ends at 10 and I'm a shitty room that has 0 service lol
BlackBerry8330/4.5.0.77 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/105

[GTPprix]

Sucks man, we need to get you moved to a different room heheheh

[99-LS1-SS]

I dont believe so, its two different issues really so its hard to tell. The problem is there is another harmonic resonance issue being worked on right now (there is a PIP stating to not replace anything till the fix is determined) that also has similar symptoms.

In fact I saw a car yesterday that the shaft was replaced with the new balanced unit and it still had the resonance/boom issue only at 70-73mph and you couldnt really hear it if the HVAC was on.

I wonder what the details of the second issue are? I'm curious if I have one or the other or both conditions. My luck it will be both.

Let me ask a far fetched question that could (maybe) remotely be affected by the harmonic resonance issue(s). Do you think that wheel hop could be cause or be affected by the resonance in ANY way? The only reason I ask is because when I would burnout in my car it would start out spinning normally but end up in a mad hopping frenzy by the top of first or second gear. I'm sure that some of the wheel hop is from shock to the drivetrain but could the driveline issue contribute?

[GeorgeInNePa]

I wonder what the details of the second issue are? I'm curious if I have one or the other or both conditions. My luck it will be both.

Let me ask a far fetched question that could (maybe) remotely be affected by the harmonic resonance issue(s). Do you think that wheel hop could be cause or be affected by the resonance in ANY way? The only reason I ask is because when I would burnout in my car it would start out spinning normally but end up in a mad hopping frenzy by the top of first or second gear. I'm sure that some of the wheel hop is from shock to the drivetrain but could the driveline issue contribute?

It's hopping during the burn out? Are you feathering the gas? Hopping starts when the tire is slipping but still grabbing a bit of traction. Slop in rubber bushings can do it too.

Did you install the X bushings and the diff bushings?

[99-LS1-SS]

X-bushings = yes
Diff bushings = not yet

[99-LS1-SS]

They just called and my car is ready to pick up. I just hope this helped the issue. I'll give an update tomorrow after I get the car.

[GM_Fan]

Looking forward to reading the update.

[-Ray-]

Waiting on Brandon to pick up his car now. tap tap tap.....

[99-LS1-SS]

Unfortunately my car is at the dealership that I purchased it from and they are 1.5 hours away. So, I'll have to sweet talk my way into being able to leave early or it will be tonight before I get it.

[99-LS1-SS]

My brother picked my car up. He said he didn't have much opportunity to get to vibration speed but he said at a minimum it's definitely better. Right now I'm getting the differential bushing put in it in hopes that they, along with the BMR control arms and x-bushings, will help to reduce wheel hop. I'll give my full report once I get back home tonight. I'll have 1.5 hours of driving time and I should be in the "vibration zone" most of that time.

[99-LS1-SS]

Waiting on Brandon to pick up his car now. tap tap tap.....

Your wait is over! :woohoo: I can no longer charge for a ride in my vibrating car!!!:woohoo:

[bigtreepu]

22k.. no issues yet. 2009 GT
build date was july of 08 i believe

[GotMyG8V8]

I just ticked over 20k miles, and I have now noticed this issue as before i thought it was a wheel balance issue, but now all the wheels are balanced and there is an annoying ass humm when i'm between 55-65ish. Thought it was something i did lol.

[DRUGS]

i have 30k on the car and i yea im sure mine has the issue

[616 of 933]

i dont have it but i only have 3300 miles

[ULTRA Z]

i just voted no issuse i hav 28,000 miles on my 2009