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Old June 6th, 2009, 12:34 AM   #1
94transam25th
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Default Clanking/Rattling Noise from rear of truck

Ok i have a clanking/rattling noise that sounds like it is coming from the rear on my truck that is driving me crazy and i cant seem to figure out what the hell it is. It only happens when going over bumps

Anyone got any ideas i was thinking Ujoint but dont know how to check

thanks in advance,
Brandon
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Old June 6th, 2009, 12:49 AM   #2
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First quick question

is tailgate tight to bed? That what I would check because they get loose then make those noise what you describe. Does it make noise when it hit bump road?
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Old June 6th, 2009, 09:26 AM   #3
94transam25th
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yea my tailgate is kinda loose and i cant really find and adjustment to tighten the latches, or do they sell the rubber bushings at the dealer?

btw the truck is a 2000 silverado 1500

thanks
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Old June 6th, 2009, 09:49 AM   #4
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Spare tire loose?
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Old June 6th, 2009, 10:07 AM   #5
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nope checked the spare tire and its tight... i think im gonna take it down anyways no point carrying a 31" spare running 35's lol
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Old June 6th, 2009, 10:29 AM   #6
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it sounds like its coming from my rear diff... i pulled the back wheels off and when i move one i hear what i think is the clank noise im hearing when driving, how screwed am i? is the slack fixable or do i need to get my rear diff rebuilt?
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Old June 6th, 2009, 09:15 PM   #7
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Sounds like the outer pinion bearing is going/gone
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Old June 6th, 2009, 09:37 PM   #8
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Quote:
Originally Posted by wave_crusher View Post
Sounds like the outer pinion bearing is going/gone
GM had to replace one of them (Pinion Bearing) on my 2000 on their dime with about 40K on it.
I dropped it off at the Dodge Dealearship on the second one, and they turned it into a 2004 Hemi for me. (86K on it that time)

Good Luck.
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Old June 7th, 2009, 12:12 AM   #9
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Does it have a rear sway bar on it, if so check the sway bar links they will go bad and make noises over bumps.
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Old June 7th, 2009, 09:38 PM   #10
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well i am an idiot... the noise i heard when spinning the one side was the rotor on the other side hitting the stud so when i put the wheels back on and did it there was no noise lol... i still have that rattle so im thinking it could be the tailgate
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Old June 7th, 2009, 09:55 PM   #11
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heat sheild.
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Old June 7th, 2009, 10:03 PM   #12
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heat shield where? on the brakes?
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Old June 7th, 2009, 10:06 PM   #13
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Quote:
Originally Posted by 94transam25th View Post
heat shield where? on the brakes?
It on exhaust I am not good with spell it cat converter.


I heard 1 guy that replace aluminum driveshaft with steel driveshaft it stop make noise.

Have you try raise on car hoist or jack rear axle off ground then have someone in driver to spin tires so you could listen where noise came from.


It useful for me but keep mind it kind dangerous but make sure you have 2 jack support that can hold weight and on cement.
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Old June 10th, 2009, 04:12 PM   #14
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Quote:
Originally Posted by Woodyjiw View Post
Does it have a rear sway bar on it, if so check the sway bar links they will go bad and make noises over bumps.
I don't know what kind of chevy truck you drive that has a rear sway bar....unless it was a burb or tahoe that you cut the top assend out of it
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Old June 11th, 2009, 08:28 PM   #15
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E-Brake cables!
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Old June 12th, 2009, 07:52 AM   #16
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I'd pull the tailgate off and see if the sound is still there. IIRC, those trucks clunk in hte rear end when shifting... Had them before, myself...
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