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Rearend Noise Over Bumps

mikedogg

By mikedogg
in Ask A GM Technician

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mikedogg Enthusiast

mikedogg

Posted
Posted

Hello,looking for some help with my 04 4x4 ext.cab z-71 43,000 miles....getting a clunk in the rearend going over bumps more noticeable at slow speeds and when turning on a incline or decline but also going straight,it happens in forward and reverse, also I can hear it if I grab the tire and shake it side to side while it's on the ground....had a dealer look at it during an oilchange the other day and they said normal axle play, I'm not convinced ...also I checked and everything is tight, truck had new monroe reflex shocks this past summer and leafs have the insulator pads so I don't believe it's suspension.....thank you

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

looking at it during an oil change is and did produce nothing for you.

 

if you can duplicate it consistantly , go back and ask the shop forman to go on a road test WITH YOU in the truck,and see what they say,

ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted

If you can duplicate it by shaking the truck back and forth by one of the rear wheels it is most likely

normal axle play. Never really had any real issues with rear supension noise on these trucks other than

some spring slap noise from missing insulators.

 

The only other possiblity is weak leaf spring bushings causing the springs and shakles to move around too much.

mikedogg Enthusiast

mikedogg

Posted
  • Author
Posted
If you can duplicate it by shaking the truck back and forth by one of the rear wheels it is most likely

normal axle play. Never really had any real issues with rear supension noise on these trucks other than

some spring slap noise from missing insulators.

 

The only other possiblity is weak leaf spring bushings causing the springs and shakles to move around too much.

 

 

Thanks guys,I'm gonna have it checked again tomorrow at a different dealership to be sure,it just doesn't sound normal to me having owned this truck for 6+ years

jro909 Senior Enthusiast

jro909

Posted
Posted

is it like a clunk? if i hit a pothole with one of the rear tires it will make a odd sound..i figured it was the springs bouncing..probably nothen to worry about

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