Cummins tick noise after shut down and vibration

[GPurcell01]

I've got a 21 RAM 2500 4WD HD BH with cummins. Right after shut down, I get a "chick a, chick a, chick a, chick a, chick a, chick a" sound from the engine bay for about 5 to 10 seconds. Is this the sound you're talking about? Based on comments here, it's associated with the DEF system? Nothing to worry about it seems.

You would be correct. DEF system purging itself.

 

[flan]

Watch above the exhaust manifold, the egr valve has what looks like a thin exposed steel cable that goes in a semi circle. That cycles in mine upon shutdown.