Chatter

[marchtransport]

Thank you in advance. I have noticed a slight chatter or clunking at acceleration from a stop when towing. Its very slight, but there. It "feels" like its coming from the diff, but hard to be sure.. I have had the same symptom with an old ford and it was a positrack additive issue in the diff. Truck is a 2018/3500/4WD/DRW/ Auto/90K, all freeway miles 90% towing an approx. 15K horsetrailer, never off road/driven hard.
any ideas? seems like too low mileage for a diff oil problem.

 

[sag2]

If it is during a turn and taking off it needs to have the fluid changed.

 

[AEdelheit]

I would also check the U joints and carrier bearing especially if you get the chatter during straight line acceleration.

 

[marchtransport]

If it is during a turn and taking off it needs to have the fluid changed.

Thank you for your time

 

[marchtransport]

I would also check the U joints and carrier bearing especially if you get the chatter during straight line acceleration.

Thank you for your time

 

[Cummins12V98]

How many miles on your diff fluid? Fill in your signature so we can see what younger driving.

If it's OE fluid I will bet that is the culprit as it is simply junk.