I've had it on our 2013 for several years and it simply plugs into the ODB2 port and stays there.
We have annual emissions inspections here in metro-PHX, so all I do is unplug it before heading in for the emissions test (all they do is plug into OBD2 port and check for any emissions related MIL codes) and plug it back in when I get home.
No issues to date and our Tahoe runs great with it!
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