I was backing a pretty heavy trailer up the driveway last night in the snow. When the rear end broke loose, and I stood on it to melt thru the snow and get back to gravel, It sounded like a grinding noise coming from the rear. I have a Dana 60 2500 LSD axle with 4.10 gears. Is this the sound of a pending failure, or does the factory LSD make noise when you work it hard. I drove the truck about 280 miles today with no problems at all.

 

mine has made noises before.more like a binding sound in reverse and with a trailer.
Took it to the local shop that installed my 4.56 gears,and they said its fine.And it has been fine.It does not do it all the time.Plus I have a lift and big tires.

Not to say yours is fine,I would have it checked out.(better the catch it early if there is a problem)

 

When in doubt, pull the rear cover and carefully inspect everything. Clean it all out and change the fluids as needed.

 

Are you sure it wasn't just a grinding noise from the tires digging into the gravel and/or throwing them under the truck?

Also, do you swap in the Dana 60? 3rd gen's don't use Dana axles.

 

Yes, I swapped it after my 9-1/4 wrecked a few sets of pinion bearings. I could hear gravel being thrown, AND the metal grinding noise. I pulled the cover, and it all looked ok, so I am assuming that if it doesn't make any noises going down the road, that the LSD makes some noise when it is worked hard.

 

Yeah, more than likely its just the limited slip talking to you if everything looks good in there.

So what did you do for wheels? 2 different sets?