Violent Shake/Vibration in front end at 40-50 mph - Chevy and GMC Duramax Diesel Forum
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Old 11-08-2012, 05:05 PM   eBay Motors  #1 (permalink)
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Violent Shake/Vibration in front end at 40-50 mph

I am beginning to get very annoyed with this.. My truck has a violent shake in the front end at around 45 mph.. When i say violent don't take it lightly, i mean violent lol.. It started when i had my worn out Toyo open country m/t's on there at no particular speed..

So i bought a used set of BFG's 325/60R20s
with approx 50-60% tread left.. it seemed to smooth out a little but at 45 mph the rattle came back.. I checked all the steering components to find i had inner and outter tie rod ends bad on both side.. So i replaced them with Moog tie rods.. No more slack or play in the steering at all.. Took the truck for a drive and the vibration was LESS than before, but the truck is kinda pulling to the left. So i thought well i'll take it to get an alignment and it will prob fix the issue... Now the truck has a bigger death wobble than before and it violently shaking.. Sometimes it won't vibrate at all.. but sometimes it will.. but it always does it at the exact same speed and gets worse in a curve.. When the tires were mounted they used a half a bag of balancing weight per tire... Seems like there is no bounce at all in the back as all the wobble is in the front and in the steering wheel..

What do you think is causing this? Could a steering dampener or wheel bearing cause this? there's absolutly no give in either wheel in the front from up and down or side to side... I used a 5 foot slate bar to pry and it had no play at all... I'm stumped and getting aggravated with it.. I can't go anywhere without feeling like i'm riding a mechanical bull... any input would be appreciated..
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Old 11-08-2012, 06:03 PM   eBay Motors  #2 (permalink)
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Check your hub. Jack up front wheel and grab the top and the bottom of the wheel. it should not move at all. Just had to replace mine.
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Old 11-08-2012, 06:07 PM   eBay Motors  #3 (permalink)
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Quote:
Originally Posted by ILsilverado View Post
Check your hub. Jack up front wheel and grab the top and the bottom of the wheel. it should not move at all. Just had to replace mine.
there's no travel in any direction in the front wheels.. that's what stumps me.. i couldn't get it to budge with a 5 foot slate bar..

did you just replace the hub, or the complete hub assey including the wheel bearing?
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08 CCSB LMM LTZ- 6" super lift with t bar drop. 35" Nitto grappler all terrains, 20x10 Moto metal 951's.. Edge evo race cts on level 2. 5" MBRP SSTB straight pipe, 6 inch tip, DDM 3000k Fogs, 6000k Lows, all on mod

Latest install: nathan airchime K5LLA, 5 gal tank, 444c
compressor
My youtube channel-http://www.youtube.com/user/tdv1985?feature=mhee

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Old 11-08-2012, 06:13 PM   eBay Motors  #4 (permalink)
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It was the entire wheel bearing from Dmaxstore.

Timken Bearings (NEW + Kryptonite) [SP580310-SP580311-580312-58013] - $199.99 : DMAXSTORE.COM, Your Duramax Diesel-Only Shopping Resource
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Old 11-08-2012, 07:25 PM   eBay Motors  #5 (permalink)
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it could be that the tires are so bad out of balance that the half a bag of balance beads isnt doing enough and would require more weight. a half a bag does not sound like it would be enough for that size of tire. we generally just thro a whole bag ina atire which is 10 oz. i had some one time that were that size and new that took a bag and were still 10-15 oz out. we even spun them before putting the bags in them
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Old 11-09-2012, 08:14 AM   eBay Motors  #6 (permalink)
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i'm thinking it's the tires.... they're saying it calls for half a bag but they didnt spin them or anything so how would they even know if they are balanced?
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08 CCSB LMM LTZ- 6" super lift with t bar drop. 35" Nitto grappler all terrains, 20x10 Moto metal 951's.. Edge evo race cts on level 2. 5" MBRP SSTB straight pipe, 6 inch tip, DDM 3000k Fogs, 6000k Lows, all on mod

Latest install: nathan airchime K5LLA, 5 gal tank, 444c
compressor
My youtube channel-http://www.youtube.com/user/tdv1985?feature=mhee

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Old 11-09-2012, 09:00 AM   eBay Motors  #7 (permalink)
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i put a set of used wheels and tires on a jeep i had once, i put them on the jeep the exact same way they came off of the other one. changed the oil and rotated the tires took it for a spin and thought i was going to die it was shaking horribly. started changing parts and never could figure it out. moved the tires back the way they originally were and everything was fine. i think your problem is in the tires just from experience
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Old 11-09-2012, 03:17 PM   eBay Motors  #8 (permalink)
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Quote:
Originally Posted by Lwesley View Post
i put a set of used wheels and tires on a jeep i had once, i put them on the jeep the exact same way they came off of the other one. changed the oil and rotated the tires took it for a spin and thought i was going to die it was shaking horribly. started changing parts and never could figure it out. moved the tires back the way they originally were and everything was fine. i think your problem is in the tires just from experience
UPDATE!:

Guys i want to thank you for all your time and advice... I took it to a tire place today that had a machine that can spin balance a 35 inch tire..

they broke the tire off the rim and took the junky balancing sand out of the tires, and used "stick on" weights on the inside of the wheel... Let me tell you, the truck rides smoother than a new one would!

Don't waste your time using balancing sand because in my experience it doesn't work worth a crap... Take your tires where they can spin test them for balance and it will be well worth it...

Anyway's just thought i'd share, hopefully someone will read this thread will be helpful for someone down the road.. thanks again to all you that took the time to read my problem and give me helpful advice!
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-Tommy Varney

08 CCSB LMM LTZ- 6" super lift with t bar drop. 35" Nitto grappler all terrains, 20x10 Moto metal 951's.. Edge evo race cts on level 2. 5" MBRP SSTB straight pipe, 6 inch tip, DDM 3000k Fogs, 6000k Lows, all on mod

Latest install: nathan airchime K5LLA, 5 gal tank, 444c
compressor
My youtube channel-http://www.youtube.com/user/tdv1985?feature=mhee

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Old 11-09-2012, 03:33 PM   eBay Motors  #9 (permalink)
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I didn't help you out but glad you got it figured out man.
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Old 11-11-2012, 05:09 PM   eBay Motors  #10 (permalink)
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i hope they didnt charge you for that? since it was their mistake to begin with. but glad to hear that fixed it.
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