2017 Chevrolet Equinox clinks on shutdown

the engine makes a clinking sound after I shut it down

Could be the exhaust system cooling down.

Tester

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+1
Uneven contraction of parts of the exhaust system will cause this situation, but this is not at all dangerous, and is just something that exists with some vehicles–but not others.

It is very unlikely that the noise is coming from the engine.