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Old 01-09-2012, 09:44 PM   #1
UnRelentLess
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Steering wheel shake *solutions* continued

Yes, title is misleading. I do not have the "solution" to the 65mph-75mph steering wheel shake but I'm well aware of what it is not. I am currently suffering from the steering wheel shake at the oddly specific speed which others have suffered from, and I don't have the money to waste on replacing parts which are not bad / causing the shake. I recently replaced a bunch of my front end suspension and tires when I had a "dual blow out" and the new struts / polyurethane parts exacerbate the shake.

If you have suffered from the exact issue of the 65-75mph wheel shake, whether under accel or braking, please provide how you managed to solve and/or mitigate the shake. I would like to deduce the cause of this issue.

Things which are NOT the steering wheel shake:
Front Strut Mounts
Front Struts
Front Strut endlinks
Front Springs
New Tires?
Torque method of lugnuts
Alignment
New road safe outer tie rods


Things I believe are related to and/or main cause of the shake which I have yet to rule out:
Lower front control arm bushings *Haven't replaced them yet*
Rim or rims might be bent and regular tire balance machine / tech didn't catch it.
Rotor / pads warped / run out
Hub bearings
Rust / brake dust build up on hub
Sway bar bushings *Haven't installed the pedders ones yet*
And I haven't considered this yet but I replaced my stock radius rod casters with pedders versions 50,000 miles ago. Could be possible they are going bad leading to and/or contributing to the wheel shake?


I find it amazing that this issue has plagued GTO owners for years and nobody has yet to give a definitive solution.
Some people changed rotors and pads and claim to have lost their wheel shake.
Some have changed rim and tires repeatedly to get rid of the shake.
Some owners have odd specified parts installed which eliminated the wheel shake, then never let anyone make any changes so that it wouldn't return.

I'm hoping that this year, we're going to solve this!
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Old 01-09-2012, 09:55 PM   #2
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I read a thread where a guy claimed several different tires caused different levels of shake. Seemed far-fetched to me, but... idk. I've yet to experience the shake with 3 different sets of wheels, including one bent draglite (didn't find out it was bent until after I traded it off.. yes I felt bad) and tires durring the 6K I've put on my car (71K total on it)
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Old 01-10-2012, 02:51 AM   #3
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Have the tires been road force balanced?
I've had luck with road force balancing the tires and using a torque stick with my impact gun. The torque stick seems to keep brake pulsation to a minimum as well.
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Old 01-10-2012, 04:50 AM   #4
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Mine was caused by incorrect amount of friction modifier in gear oil. Using the premixed current recommended GM fluid fixed most of it. Remaining fixed with road force balance. Smooth as ice once again, so there is hope, just a matter of determining what it is on your car, and correcting.
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Old 01-10-2012, 05:46 AM   #5
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I had the shake when I got the car. New rotors and pads helped, but it was still there. I replaced the Strut Mounts, Front Control Arm, Radius Rod, and Rear Control Arm bushings with poly, and it was still there. I even have 2 sets of stock 17" wheels; one with street tires and one with track tires (NT01s). The vibration was worse with the street tires, but still present with the track tires on.

What ended up fixing it for me was replacing the studs and lugnuts. I now have ARP studs front and rear, as well as gorilla lugnuts, and it appears the shake is gone.
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Old 01-10-2012, 07:15 AM   #6
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Hubcentric rings for aftermarket wheels.
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Old 01-10-2012, 08:03 AM   #7
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I have a set of stock 17's and stock 18's and completely stock suspension. The 18s have worn tires and I get wheel shake(shake got more noticable the less tread I had). The 17's have new all season tires, no shake and smooth as butter on the freeway.
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Old 01-10-2012, 10:45 AM   #8
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Quote:
Originally Posted by csucguy18...View Post
I have a set of stock 17's and stock 18's and completely stock suspension. The 18s have worn tires and I get wheel shake(shake got more noticable the less tread I had). The 17's have new all season tires, no shake and smooth as butter on the freeway.

Get the 18s rebalanced.. thats an easy one.
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Old 01-10-2012, 10:47 AM   #9
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Quote:
Originally Posted by Wagonbacker9...View Post
Get the 18s rebalanced.. thats an easy one.

I did, shake was still present.
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Old 01-10-2012, 02:01 PM   #10
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I have a thread just like this one that probably 20 pages long by now with tons of results of peoples struggles/success

Ive spent alot of money and time in this issue and somehow it always comes back to the tires in the end.

This car needs perfect tire wear and balance on perfectly true front rims.
If any of these aspects are not 100% you will shake.

The thing that hasnt been solved is wtf is in our front ends that makes it THAT sensitive to tires/wheels.. which is the real problem at hand but, in the end.. its always solved with tires... well almost always.. there was a couple of unexplainable circumstances.

If you have a new set of tires and balance.
Bring them to your shop and ask them to check for anything wrong with the rim tire combo whatsoever. They have a tool they use to see if there is anything spinning untrue.
They dont use this typically when balancing.
Its how i found out one of my aftermarket rims was slightly bent and not spinning perfectly. Needless to say after that rim went on the shake was 100% gone. I drove on the highway for days for no reason but to enjoy it after fighting with it so long.

Now for the bad news, i still get shake problems with slightly improperly worn tires, if the weight of the balance is off even a hair and for some reason with my summer tires the first mile or so on the highway everytime i let it sit overnight (im pretty sure they flatspot that quickly due to the compound)

Ive spend alot of money investigating part failures and it was just a waste.

Properly torqued lugnuts are helpful but not always the answer

Poly RR bushings double how sensitive the car is to the shake,
It is not the answer either though but if you have alot of shake with poly bushings, half is gone if you go back to stock.. if you have a little shake, its all gone with stock bushings.

Watch your tires and rims closely and dont overinflate. You do not want to bend your rim ever so slightly and give yourself a headache for years like i did.

Good luck everyone as it is a very frustrating issue for some and it seems hopeless.
My current stock wheels and snow tires shake bad, and i hate it.. i need to get them balanced and hope it goes away.

My car was technically sold for 24 hours or so because of this reason, but then the dealer tried to screw me and i backed out.
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Old 01-10-2012, 02:11 PM   #11
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here is my 22 page thread for those interested

http://www.ls1gto.com/forums/showthr...ng+wheel+shake

wow i just noticed from my first to last post in that thread it went on for 2 years.. not to mention i struggled for a year or more before that...

I HATE STEERING WHEEL SHAKE! lol weirdest thing is the car always rides butter smooth otherwise leaving no signs of why you have a shake

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Old 01-10-2012, 04:45 PM   #12
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Quote:
Originally Posted by sporaclic...View Post
here is my 22 page thread for those interested

http://www.ls1gto.com/forums/showthr...ng+wheel+shake

wow i just noticed from my first to last post in that thread it went on for 2 years.. not to mention i struggled for a year or more before that...

I HATE STEERING WHEEL SHAKE! lol weirdest thing is the car always rides butter smooth otherwise leaving no signs of why you have a shake

Heh, actually I read up on that thread and was amazed that after pointing out the issue, the problem had yet been properly identified after all that time. I was hoping to re-kindle the interest of the steering wheel shake to see if anyone had discovered the actual cause and proper fix yet.
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Old 01-12-2012, 01:31 PM   #13
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I found that really cranking on my endlink connection to the strut really helped, until they loosened up again a week later.
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Old 01-12-2012, 03:16 PM   #14
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I find it odd that it seems to be either you have it or you don't.

Mine has never had it going from stock to a Track II setup to rebuilding the whole front suspension with coilovers and new bushings with all the track days and brake crap that I have done.
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Old 01-13-2012, 06:34 AM   #15
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I began noticing a little shake last summer. I'd had a wheel off to check something and figured to resolve the shake by re-tightening the lugs with a torque wrench. But that didn't do it. So now I'm in the "uneven front tire wear" camp. I'll know this spring when I change the front tires.
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Old 01-13-2012, 09:27 AM   #16
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There are two generic reasons for the shake (according to chassis engineering at GM)

1. Brake Pulsation
2. Smooth Road Shake

The first is typically a rotor or pad problem, sometimes you can mitigate it other times you can't. The second is a steering issue, mostly caused by unbalanced wheels or bent rims. However both are present at around 80 mph, regardless of if you feel it or not. The presence may be minor but it exists, it relates to harmonics.
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Old 01-13-2012, 11:53 AM   #17
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Quote:
Originally Posted by LS2 MN6...View Post
There are two generic reasons for the shake (according to chassis engineering at GM)

The second is a steering issue, mostly caused by unbalanced wheels or bent rims.

yep, my shake completely goes away when I mount my winter wheels. It's definitely wheel/tire related and to lesser degree the mating and torqueing procedures when attaching said wheel... my winter wheels with hub rings have a very very snug fit when mounting on the hub and I feel this snuggness minimizes any case of steering shake.
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Old 01-15-2012, 06:36 PM   #18
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Figured id add that my winter wheels were shaking when i put them on a couple weeks ago.
Got them balanced still shook but less.

I was running full positive caster, i went back to stock caster settings on my Bushings and changed nothing else... my shake is 99% gone on these wheels.. i had a couple moments were it vibrated a little bit but was pretty smooth otherwise.

Comes back to the front suspension geometry that was mentiond.
When you pull the wheel forward in relation to the rest of the linkage you put stress on things that were not intended to work in sync at that angle.
Now were talking minor amounts here but,its appearantly enough to effect steering wheel shake. It may have been designed to sit at that much caster for a reason.

Much less feedback is being transmitted threw the wheel going back to stock setting as well.
Those with high positive caster, see if it helps you out by going back to stock caster settings.

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Old 01-15-2012, 07:03 PM   #19
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I don't see tie rod ends anywhere on that list. I had a pretty bad shimmy in the wheel between 65-75mph. Couldn't figure it out. Nothing was visibly bad...cnanged tie rod ends and problem solved.
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Old 01-23-2012, 06:25 PM   #20
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Well yesterday I put a dial indicator on the lip of my wheels to check runout. One was off about .006", the other, .019". I got them both down to within .004" and the shake is almost gone. My tires are worn pretty bad up front thanks to a large concrete/steel chunk sticking up out of a rr crossing, so the tires have a bit of runout. My hub rings are 72.62 mm. My wheels measured 72.5 mm so I figured the interference fit would be enough to properly center the wheel. I guess they are getting worn. I ordered some new rings 73 mm and will update. Hope this helps.

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Old 01-23-2012, 06:48 PM   #21
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The runout I'm my tires is more than likely caused by running them with the wheels off center, not from the alignment problems I had. They are unevenly worn on the edges. Thought I would throw that in.
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Old 01-24-2012, 12:02 PM   #22
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Update:

I haven't had my rotors or wheels rechecked yet for run-out / uneven balance, etc.

However I did have my power steering line fail. The stupid rubber section upfront that connects the power steering hard-lines from the cooler to the pump. While driving the vehicle with no power steering, the shake was redicioulously worse even at lower speeds now!

I flushed out all the old fluid, incase there might of been a hint of regular power steering fluid in the system Used a fuel line hose and new clamps, put in fresh ATF fluid, took a few mins for the pump to quiet down. .. Go cruise and take her up to 70mph, steering wheel shake is nearly gone??!!?!!?

I intend to replace the pump since that has a slow leak (and I don't trust it since I drove on it for a couple days with no fluid). This section of hose is known for leaking on our GTOs, I knew mine slowly leaked, but it was never enough to be a concern. Once I replace the pump I'll have definite results. But I'm starting to believe this wheel shake is related to the steering pump and or leak and or fluid that is in the system. I searched and I've seen someone else ALSO mention the steering pump being related with similar results in the mysterious steering wheel shake.
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Old 01-24-2012, 01:27 PM   #23
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i have had this shake come and go, mine is from 60-68mph, mine is directlly related to tires, put new tires on, no shake, after 6-7K miles i rotate the tires, and i get the shake, rotaote them back, and the the shake remains, after another 6-7K mile get new tires, and the shake is gone. I have pedders shocks and springs all the way around, and the shake has come and gone just the same.
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Old 01-24-2012, 01:54 PM   #24
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Quote:
Originally Posted by burnt goat...View Post
i have had this shake come and go, mine is from 60-68mph, mine is directlly related to tires, put new tires on, no shake, after 6-7K miles i rotate the tires, and i get the shake, rotaote them back, and the the shake remains, after another 6-7K mile get new tires, and the shake is gone. I have pedders shocks and springs all the way around, and the shake has come and gone just the same.

My shake oscillates at 70mph: if I stick my car on cruise on a straight, level highway at 70mph, my shake gradually cycles from not-so-bad to bad and back again. But I chalk this up to uneven tire wear on EACH of my 4 tires, because I live in the land of road hazards and have had to replace odd tires at odd mileages. One of these days, I expect I'll get fed up and just replace all 4 tires, get an alignment, and probably be done with steering wheel shake...until the next eventual and inevitable road hazard.
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Old 01-24-2012, 02:17 PM   #25
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Quote:
Originally Posted by burnt goat...View Post
i have had this shake come and go, mine is from 60-68mph, mine is directlly related to tires, put new tires on, no shake, after 6-7K miles i rotate the tires, and i get the shake, rotaote them back, and the the shake remains, after another 6-7K mile get new tires, and the shake is gone. I have pedders shocks and springs all the way around, and the shake has come and gone just the same.

Quote:
Originally Posted by esau999...View Post
My shake oscillates at 70mph: if I stick my car on cruise on a straight, level highway at 70mph, my shake gradually cycles from not-so-bad to bad and back again. But I chalk this up to uneven tire wear on EACH of my 4 tires, because I live in the land of road hazards and have had to replace odd tires at odd mileages. One of these days, I expect I'll get fed up and just replace all 4 tires, get an alignment, and probably be done with steering wheel shake...until the next eventual and inevitable road hazard.

Yeah the shake occurs at 60ish to 75ish then levels out .. kinda beyond that. (The higher mph shake is because my aluminum drive shaft is off balance.)

More than likely the shake is related to the tires because this is my first time with eagle gt on the front and so far... I hate them. I'm sure the power steering assists in mitigating the vibration hence I felt the difference and I wonder if a new pump will eliminate the shake all together, regardless of tires on the front.
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Old 01-24-2012, 04:53 PM   #26
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Mine started shaking after I changed all my pads and rotors. Before I could drive 100mph smooth as butter. I tried my torque wrench on the lugs. I thought I was good to go. Couple days later it came back. My front tires are shit though. See what happens come spring with the new tires.
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Old 01-24-2012, 07:09 PM   #27
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trying lowering your psi on your tires if your over the factoy 35, even a 34.. see if it makes a difference.. My winter tires shake WAY worse at 39psi than they do at 34. psi
If you know your tires are shit and cant get new ones yet... at least it makes it more tolerable if it helps.
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Old 01-24-2012, 07:13 PM   #28
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Quote:
Originally Posted by UnRelentLess...View Post
Update:

I haven't had my rotors or wheels rechecked yet for run-out / uneven balance, etc.

However I did have my power steering line fail. The stupid rubber section upfront that connects the power steering hard-lines from the cooler to the pump. While driving the vehicle with no power steering, the shake was redicioulously worse even at lower speeds now!

I flushed out all the old fluid, incase there might of been a hint of regular power steering fluid in the system Used a fuel line hose and new clamps, put in fresh ATF fluid, took a few mins for the pump to quiet down. .. Go cruise and take her up to 70mph, steering wheel shake is nearly gone??!!?!!?

I intend to replace the pump since that has a slow leak (and I don't trust it since I drove on it for a couple days with no fluid). This section of hose is known for leaking on our GTOs, I knew mine slowly leaked, but it was never enough to be a concern. Once I replace the pump I'll have definite results. But I'm starting to believe this wheel shake is related to the steering pump and or leak and or fluid that is in the system. I searched and I've seen someone else ALSO mention the steering pump being related with similar results in the mysterious steering wheel shake.

It may not be the cause of the shake but it may be what makes the car that sensitive to a shake.
I was actually thinking of trying a fluid change and now i might actually go threw with it and see what happens.
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Old 01-25-2012, 08:13 AM   #29
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As soon as I mounted the stock 17s, the shake went away (65-75mph). Hubcentric rings on aftermarket wheels seem to help, but they didn't eliminate the shake 100%. I'll be on stock 17s for a while unless someone figures out a simple solution.
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Old 01-25-2012, 02:47 PM   #30
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stock 17s can shake just as easy with minor tire imperfections.
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