I have a loud grinding coming from my rear axle. It only happens when we have about 300 pounds of weight with people or if i hit bumps. It sounds like its coming from the rear driver side axle. It mainly does it on bumps turns or accelerating. Its not the axle bearings or pinion bearing. I've looked around under there n cant see anything causing it. Any one ever experience this?

 

Have you pulled your diff cover yet to check?

 

Yup no metals at all. Brakes n dust cover seem fine. I did notice my shock top is loose by the bushing but i dont see how that could grind...

 

Look for shiny spots on your rear coils and sway bar/links.

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unless you recently had axle work done, like gears, lockers, or drive shafts, i would follow more of what shock is suggesting.


this sounds like you are bottoming out your suspension and there is some metal to metal contact.

1st.

first i would look at is the coils. are they bowing and getting near your trackbar?



2nd.

second I would look at is, is your shock absorber hitting your rear trackbar bracket?

 

it would help if you identified your lift along with the suspension components within it.

 

I had it regeared about a month ago. Thats why we checked the differential. Theres no metal chunks we could see. Could it still be the gears? They were perfectly fine for a month it seems to have happened almost overnight. I will look at the coils, but its not a clunking it sounds like something grinding on when weight is distributed to the rear end, such as accelerating or even just coasting and hitting bumps. I know what the bottoming out sounds like and its not that i dont believe. I will search around more today and see if i can find somewhere it may look like rubbing.

As for lift i have a 4 inch lift with front lowers and rear uppers. I have the correction wedges in the rear. Also have a rear 1310 coast driveshaft. Theres more under my profile for the non mobile users, but not sure if its relevant.