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'08 2500hd Drivetrain Noise - Dry Bearing? Help!


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#1 Raven

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Posted 14 February 2010 - 03:02 AM

Ok, I'm about to go nuts here... I've got a great '08 Silverado 2500 HD Crew Cab Short Bed 4x4 with the 6.0 and the automatic. The truck is 100% bone stock. It has 28k on it and has been perfect up till now. I LOVE this truck.

But - it's developed a weird noise in the last 1000 miles that my dealer can't seem to hear/find. And no, I'm not imagining it!

Just before the truck comes to a complete stop and/or as you begin to accelerate a 'dry bearing' sound comes from under the front end of the truck - at least that is where it sounds like it is coming from when I am in the driver's seat. The truck drives out perfectly, no pulling to either side, no brake noise and the noise does not increase or diminish if braking or if you just let it coast down. It doesn't matter what type of pavement (or off-road) that you are on - it does it regardless. The tires are worn evenly and are rotated about every 6000 miles.

The best description I can make is just that - it almost sounds like a wheel bearing or some other bearing that is dry. But - as you speed up, the sound disappears, mostly due to other road or engine noise.

I've asked them to check this truck out three times now and they say they can not find a darn thing but the sound is still there. It's a rotating sound but not a squeak. It just sounds like something is dry perhaps inside a housing (differential? Transfer case?) but again, they say they can not find a thing. Again, there is nothing in the performance of this truck to indicate something is amiss other than this noise that developed just about a thousand miles ago.

So help me out here - anyone else having this issue? It's annoying to begin with but I am worried that at the worst possible time something is going to fail and I'll be in the middle of nowhere.
2008 Chevy 2500HD LT1 Crew Cab Shortbed 4x4, 6.0 Liter, 6 Speed Automatic, Black/Dark Cloth, Locking Diff, Trailer Tow, etc.

1987 Buick Grand National Hardtop, 64k - a "few" upgrades, runs solid mid-11's.

#2 Raven

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Posted 18 February 2010 - 07:29 PM

Wow. NOBODY has had this same issue? 64 views but NO replies???

Surely my problem isn't a one-off is it?

ANYone?
2008 Chevy 2500HD LT1 Crew Cab Shortbed 4x4, 6.0 Liter, 6 Speed Automatic, Black/Dark Cloth, Locking Diff, Trailer Tow, etc.

1987 Buick Grand National Hardtop, 64k - a "few" upgrades, runs solid mid-11's.

#3 jro909

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Posted 18 February 2010 - 08:22 PM

is it like a clicking? every 6.0 i've ever seen does this odd clicking that sounds like valves..idk if it helps but year its all i got
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#4 Markd

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Posted 18 February 2010 - 08:57 PM

see if they can put it on a lift and listen from under the truck. (if they haven't already)

"Better to remain silent and be thought a fool than to speak out and remove all doubt"

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#5 Pool Runner

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Posted 19 February 2010 - 10:32 PM

After reading your post I believe my truck might be making the same noise. Mine has done it from day one and 20 miles on the clock. I have 8400 miles today and it still does it. If I had to describe the sound it similar to the sound Hybrid cars like the Prius make in parking lots when they brake. A sort of metallic, high pitched slightly grity sound. I only hear it on my truck from the driver seat too and it sounds like it's coming from the front end and only when slowing and braking on my truck. Any help appreciated.
2008 2500 HD Standard Cab, 2WD, 6.0L, G80, LT1 package, Bone Stock for now.

#6 Raven

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Posted 20 February 2010 - 12:56 AM

After reading your post I believe my truck might be making the same noise. Mine has done it from day one and 20 miles on the clock. I have 8400 miles today and it still does it. If I had to describe the sound it similar to the sound Hybrid cars like the Prius make in parking lots when they brake. A sort of metallic, high pitched slightly grity sound. I only hear it on my truck from the driver seat too and it sounds like it's coming from the front end and only when slowing and braking on my truck. Any help appreciated.


Other than the sound not being high pitched you describe it perfectly. Very gritty and almost a grinding sound.

Steve
2008 Chevy 2500HD LT1 Crew Cab Shortbed 4x4, 6.0 Liter, 6 Speed Automatic, Black/Dark Cloth, Locking Diff, Trailer Tow, etc.

1987 Buick Grand National Hardtop, 64k - a "few" upgrades, runs solid mid-11's.

#7 DataSponge

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Posted 28 February 2010 - 12:02 AM

To help narrow it down try running it:

With traction and stablity control off - if noise goes away or not. The systems on these trucks i have noticed is touchy, mine fire off the traction control / anti lock brakes every morning when I'm driving down the gravel driveway and it sounds ginding like.

In 4WD does it do the same sound or only in 2WD?

Turn your climate control off - does it still do it (clutch fan and / or compressor clutch could be kicking in or off)?

And heres one for the weird books, not in a GM product, but I had a friend that was getting a strange noise when acclerating and it was the speed sensing radio - he thought it was off but really it was tuned to a blank station and turned low. Weird, but made some interesting white noises that he thought was mechanical when giving it the gas.

Other ideas that the dealer may have checked but doesnt hurt to look again:
Rock stuck in the brake rotor / caliper / dust shield
Front ball joints and tie rod ends have been lubed (signs of grease on the zerks)
Shock boot / dust shield rubbing on shock - my truck only has 10K on it and the shock boots have rubbed section of the paint off the tubes, when you compress the suspension stopping or taking off it could be making a rubbing noise.


Hope it helps..
- Brad -
2011 Silverado 4X4 Ext Cab Z71

#8 Crookster

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Posted 20 May 2014 - 01:40 PM

I have the same issue with mine!! Have you figured it out yet ?



#9 ujtruck

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Posted 20 May 2014 - 05:10 PM

do you see any oil arout fron pumpking, did you check oil in there?

 

is it look like Gray milk shakey ?


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#10 GM Customer Service

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Posted 20 May 2014 - 09:09 PM

I have the same issue with mine!! Have you figured it out yet ?

Hi Crookster,

 

 

We are sorry to hear that you are experiencing this concern as well with a noise in your 2008 Chevrolet Silverado. I understand that you are seeking advice from your fellow forum members, however, if you need any assistance connecting with your dealership we are always here to help. Thank you!

 

Andraya R.

GM Customer Care


>>>>>> Please check out the new GM Owner Center at https://my.gm.com/ for more vehicle information!

#11 Chevyboy86

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Posted 20 May 2014 - 09:42 PM

Get the front end up off the ground give the tires a spin with a buddy try and recreate the noise while watching. See if you can get closer...your description is pretty vague. I would try I and pin point it a little closer and fill us in again

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#12 MKayler

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Posted 23 May 2014 - 06:55 AM

I had this before but mine were the rotors. They were not over worn or anything. The ones that come from GM are garbage. I replaced mine with aftermarket and new pads and sounds went away. I am with the guys above lift it up and give it a spin.  :)


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#13 Crookster

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Posted 23 May 2014 - 07:41 AM

Thanks guys I will try it this weekend,kinda funny though that the dealer cant find anything with it.



#14 govtech4

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Posted 24 May 2014 - 10:09 AM

maybe the techs didnt spin the tires


Edited by govtech4, 24 May 2014 - 10:10 AM.

How do you write a signature on a laptop screen ??

lmao.


I'm here all week ,try the Veal !!


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#15 Crookster

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Posted 24 May 2014 - 12:36 PM

True very true I will be checking it out tomorrow. I will update with what I find.




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