Ticking/knocking briefly after shutoff?

[Jessicacary]

My 2022 Bighorn very occasionally makes a tick/knocking noise immediately upon turning it off. The noise only lasts 10 seconds or less. I never heard anything like this from my former truck, a 2016 SLT. Any thoughts? Thank you

 

[Ozymandias]

Can be the DEF pump purging the lines after shut down.

 

[Diesel85]

Yes, it is normal. My 2020 work truck does it too.

 

[brucejohnson]

Yep...DEF purging process.