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Discussion Starter · #1 ·
OK so I have a 97 Chevy Silverado Z71 4x4. It has about 75k miles on it and it sits on 33" tires. It has a 3 inch body lift and that's it. I drove the truck with the 33's for several years without any problems what so ever but it has developed a front end shake that no one seems to be able to fix. The first guy told me it was the idler arm. I replaced it. The second guy said it was that the tires were cupped. So I bought all new tires and even rims too. STILL SHAKES! So now I'm pissed and poor and don't know what to do next. The cupping of the tires was definately caused by the shimmy. Basically The shimmy starts at around 42mph and you have more or less driven out of it at around 50 and then you go through it again on the slow down. ANY IDEAS?? I'm tapped out.
 

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Discussion Starter · #3 ·
ADyingDevotion said:
Check ball joints? balance them? alignment?
The Front CV Axles were both just replaced and and allignment was also just done. Tires are balanced.
 

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BIG B said:
The Front CV Axles were both just replaced and and allignment was also just done. Tires are balanced.

check ALL ball joints and wheel bearings

For the wheel bearing just jack up a tire and grab the top and bottom and try rocking the hell out of it... if it moves at all then you probably found it
 

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danez71 said:
check ALL ball joints and wheel bearings

For the wheel bearing just jack up a tire and grab the top and bottom and try rocking the hell out of it... if it moves at all then you probably found it
I thought that if it wiggled it was bad ball joints not wheel bearings? :think:
 

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Are you sure your tires are balanced? I experienced the same issue and my tire was out of round so bad it required 24 oz of weight to get it close. Problem is, it required so much weight in specific places they could never get all the weight to clear my brake calipers. Result was tire balanced great on machine then grew further out of balance the more weight material was shaved off from the brake caliper.

I became such a pest at the shop they replaced the tire for free. Solved 99% of the shimmy. I still get a little bit of shimmy but I think it's the back tires not being balanced correctly. (same guy did the backs as originally did the problem tire)
 

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Sounds like ball joints to me. Go out, jack the truck up off the ground. Put one at top of tire and one at bottom and wiggle. If it has play, your ball joints are worn out. Mine had a vibration when we got it, ball joints were way gone, my tire would move a good 1/4 inch at the top and bottom.

I havn't heard of the wheel bearings going out on an OBS 4x4 yet, mine have 166,000 miles on them and they're fine...
 

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Discussion Starter · #8 ·
cbrxx said:
Are you sure your tires are balanced?

The first thing I tried like a year ago was to re-balance all the tires. Did nothing. Keep the thoughts comming.
 

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balljoints. Do like they all say and jack it up in the front. Grab the bottom and top of teh tire and pull back and forth, if it wiggles that way its most likely balljoints. Do the same with holding teh sides and wiggle back and forth like your trying to steer it, if there is play there its a good chance your Tie rod ends are worn out.
 

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Also check bushings if your tires are cupped. The upper a-arm bushings should look like a solid peice of rubber, if(for the part that you can see) they are majorly cracked, that could be causing your cupping. It was causing a cupping/feathering on one of my front tires.
 

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I'm going to go with a loose or worn idler arm or ball joints. Check your ball joints like mentioned above. And then make sure the two large bolts that attach the idler arm to the frame are tight. If they are loose, I bet that's your problem. You could have a perfect brand new idler arm, but if it's not tightened all the way to the frame, it will give you a lot of play in your steering.

Also, are you positive it's a steering or suspension shim... and not like a driveline vibration or something. Body lifts come with the steering extender.. could that possibly be worn or loose?

What type of tires do you have? Like.. are they an all-terrain or a bogger? And I would try rotating your tires if you already haven't.
 

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i had the same problem and if the front end all checks out good then i don't care how new the tires are it could still be the tires.. like klem said what kind of tires... i mean if they are boogers or an aggresive tire like that then there ya go... lot of stuff could cause it.. i went through it too and tried every frontend nut and bolt and finally rotated the tires and the vib started comin from the rear so i realized it was the tires... now maybe it aint the tires but i'm just sayin just cause they are new don't mean they are perfect! :cheers: :ninja: :rocking:
 

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Discussion Starter · #13 ·
I've wiggled top to bottom and there is no play. I've rotated tires, it did nothing. And when I say my tires are new I mean they are brand new like less than 25 miles on them. I replaced my boggers with an AT in hopes that it may help my problem. Needless to say, it didn't. I get like a half inch of play on the side to side test it seems fairly insignificant. I've had people suggest it may be the steering box and I think it is probablly either that the tie rod ends or possibly the pitman arm. I think I am going to have to bite the bullet and take it to a front end specialist. Thanks for the feedback from everyone.
 

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ADyingDevotion said:
I thought that if it wiggled it was bad ball joints not wheel bearings? :think:
Yea... good point. I didnt word that very good.

If it does move then its a matter of where is it moving. ie between wheel and knuckle or between knuckle and A-arms

tie rods sounds like a good possibility after reading his results. I agree, 1.2" is NOT good..... prety bad actually
 

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I'm having the same.problem it's annoying I have tremendous play side to side in.my.front.end and it's shakes at 45 more of a slam what can I do
 
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