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Discussion Starter #1
i have a 04 2500 hd silverado and its making a ratteling sound comeing from the rear of the truck if i pull my 24 ft trailer i can hear it when i accelarate or if i dont have my trailer it does it when i slow down any suggestions

thanks
 

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You either have a differential gear problem, a loose exhaust or a loose spare tire!
 

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i have the same thing on my 06 LBZ and i think it might be the rear overload blocks coming loose or the rubber shrinked a little..not sure on how to fix it..
 
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