 someotherguy
Moderator
Posts: 23394
Age: 43
Loc: Texas
Reg: 08-01-03
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05-31-12 05:37 AM - Post#2231758
Subject is a 2009 3500HD regular cab wrecker, 193K miles so it's no surprise it has some squeaks and rattles, but this is ridiculous! The other 2009 3500HD we've got that is equipped the same, a few less miles (163K I think) does NOT do this.
Both trucks are equipped with SuperSprings add-on leafs, which are pretty much just an Add-a-Leaf type deal, with rollers at the end of the assembly. There's an explanation of the design and an illustration on this page: http://www.supersprings.com/supersprings_overview _...
So the rear suspension squeaks and creaks like crazy over the slightest bump. Extremely loud. This is bad, considering my wrecker is supposed to be QUIET and SNEAKY. I have discovered by accident that if the suspension gets wet, it shuts up. If it's a rainy night I won't hear a peep out of it. So naturally, I got the idea to shoot it at the car wash a little, and it will be quiet for about 1~2 hours.
With that in mind I went underneath with some CRC "heavy duty" silicone spray, and I mean I emptied an entire brand new can all over in between the leafs (factory and add-on), at the roller, shackles both factory and add-on, sway bar end links and mount bushings, everywhere that looked even remotely like it could move.
Result? It was mostly quiet, for that same 1~2 hour window as if I'd just hosed it down with a buck at the car wash. 
I really need for this thing to be quiet, and our "mechanic" at the shop just writes it off by saying "All the Chevys sound like that" which is B.S.!
Ideas?
Richard
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Matt
Moderator
Posts: 7578
Loc: SAV
Reg: 09-26-01
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05-31-12 01:17 PM - Post#2231881
In response to someotherguy
Why not give this a shot - remove the super springs and see if the noise stops. If it stops, then you know the culprit.
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Timothys Chevy
Valued Contributor
Posts: 3653
Loc: Fredericton, New Brunswic...
Reg: 09-24-03
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05-31-12 06:03 PM - Post#2231978
In response to Matt
What about Fluid film? or some kind of waxy oil lubricant?
~~Timothy~~
1984 Chevy Citation 2.5
2009 Pontiac Vibe AWD
1993 Buick Park Avenue
2001 Pontiac Sunfire GTX
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Matt
Moderator
Posts: 7578
Loc: SAV
Reg: 09-26-01
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06-08-12 09:11 PM - Post#2234986
In response to Timothys Chevy
any updates? was the issue resolved?
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someotherguy
Moderator
Posts: 23394
Age: 43
Loc: Texas
Reg: 08-01-03
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06-08-12 09:36 PM - Post#2234993
In response to Matt
Haven't had time to mess with it, plus the last couple days have been rainy so the truck's been quiet. Now looks like I may not have the chance (or need to) mess with it as I'm getting my truck back - saw it at the body shop today, basically completed except for new lettering which they were in the process of doing.
Richard
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cheetah
Member
Posts: 33
Reg: 08-05-04
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08-24-12 06:33 AM - Post#2262704
In response to someotherguy
I have 2002 2500HD. Mine has squeeked since new on the rear. When it is wet its quiet, but will return a few days later. Sometimes when its dry mine will be quiet for weeks then its back. Tried the lube spray thing as well with limited success. Kinda embarrassing when your driving slow by someone, sounds like a ol farm rig.
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someotherguy
Moderator
Posts: 23394
Age: 43
Loc: Texas
Reg: 08-01-03
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08-31-12 09:28 AM - Post#2265126
In response to cheetah
Well, the "update" is yeah, very shortly after I posted that last message they took me out of that squeaky truck and I'm back in my formerly wrecked 2009 which has about half the miles on it. But now at 115K it's starting to squeak, too...  I'm not sure why I thought earlier it was 163K, I must have been confusing it with my '94 extended cab.
Richard
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