Rearend clunking

[etorquehemi]

Have 2021 ram 1500 big horn 5.7 etorque.
At different speeds taking my foot off the gas pedal then hitting the gas I get a clunking from the rear end.was told today that this was normal.its caused by the mds -msd.kicking in an out.i have 78000 miles .bn doing this since bout 45000 miles.i can not get a dealership to correct the issue.
Any explanation or if someone can escalate this problem. Thk u for ur time

 

[vincentw56]

Have 2021 ram 1500 big horn 5.7 etorque.
At different speeds taking my foot off the gas pedal then hitting the gas I get a clunking from the rear end.was told today that this was normal.its caused by the mds -msd.kicking in an out.i have 78000 miles .bn doing this since bout 45000 miles.i can not get a dealership to correct the issue.
Any explanation or if someone can escalate this problem. Thk u for ur time

Well, if you want to test the MDS theory, just disable it and see if it still happens. You do that buy hitting the gear change button on the steering wheel. You should enable the eco and the selected gear displays in the cluster.

 

[Scap]

Have 2021 ram 1500 big horn 5.7 etorque.
At different speeds taking my foot off the gas pedal then hitting the gas I get a clunking from the rear end.was told today that this was normal.its caused by the mds -msd.kicking in an out.i have 78000 miles .bn doing this since bout 45000 miles.i can not get a dealership to correct the issue.
Any explanation or if someone can escalate this problem. Thk u for ur time

If you have the limiter slip, that could be your source and if so would likely be normal behavior.

 

[firemedic10584]

My truck, 2023 Laramie, also does this when letting off the gas. Sometimes it's significant. Doesn't happen all the time either. Just whenever it feels like it.

 

[scottmoyer]

Had similar issue on my 2006 Silverado. It was the drive shaft u joint. They replaced it with a new nickel one that addressed the issue and it never happened again. I wonder if the play in the yoke is causing this clunk.

 

[etorquehemi]

Well, if you want to test the MDS theory, just disable it and see if it still happens. You do that buy hitting the gear change button on the steering wheel. You should enable the eco and the selected gear displays in the cluster.

It does it with msd on and off.the tech wrote normal behavior. But he did a software update for dtcm.noted probably won't help anything.
So if he says normal then does a software update.madness

Well, if you want to test the MDS theory, just disable it and see if it still happens. You do that buy hitting the gear change button on the steering wheel. You should enable the eco and the selected gear displays in the cluster.

tech says normal.but did a software update dtcm.noted probably won't help anything

Have 2021 ram 1500 big horn 5.7 etorque.
At different speeds taking my foot off the gas pedal then hitting the gas I get a clunking from the rear end.was told today that this was normal.its caused by the mds -msd.kicking in an out.i have 78000 miles .bn doing this since bout 45000 miles.i can not get a dealership to correct the issue.
Any explanation or if someone can escalate this problem. Thk u for ur time

My truck, 2023 Laramie, also does this when letting off the gas. Sometimes it's significant. Doesn't happen all the time either. Just whenever it feels like it.

 

[Ramfancy]

Mine does this at low speeds when I go from coasting to light acceleration. When I turn off the afm, it stops. I thought it was my slip yoke, but I believe it is the afm turning the cylinders on. The transmission is dealing with the sudden increase in hp/torque. Someone on here explained this in detail, but I can’t remember who it was….