why does engine make noise after shutting it off

[Lindsy]

i have only 1000 miles on my 2019 chevy silverado and the engine makes weird noises after I shut off the key

[fishlessam]

What type of noise?Klunk/rattle/knock/ping/??????????

[swathdiver]

1 hour ago, Lindsy said:

i have only 1000 miles on my 2019 chevy silverado and the engine makes weird noises after I shut off the key

They all do, coolant contracts as it cools down, heat shields creak as they cool, all kinds of stuff going on and the computer system rarely sleeps, it's always coming to life and running tests which make noise.

[GregG10]

I took my dad to the dr the other day and stopped on the way home at the pharmacy to pick up his meds. Left him in the truck but shut it off. When I got back dad said “your truck talked to me while you were gone!”. He was referring to what your talking about, clicks, whirring, humming type noises. Weird but you will get used to them.

[DanPFW]

I know what you're referring to.  My kids just say the truck is making sketchy noises.  Almost like the internals of a pin-ball machine.  Who knows what it's doing.  I'm pretty sure it's not the fuel pump.