Wow! Coming off already on a 2017?!?!??
My 2011 is still good! Helm Manual says this thing is held on with (4) nuts and some tape. It says you have to remove the lift gate panel on the inside (remove a rectangular plastic cap, revealing a single Phillips screw, then a trim panel removal tool to pry the panel off). Then the (4) nuts and tape holding the appliqué on.
Sounds like you just need to remove and replace the tape?
2011 Equinox 1LT (new Jan 2011): Summit White / 3.0 L V6 / FWD / Pioneer Stereo / 18" Wheels / 131.6k miles [14-JUN-2019]
2002 Impala 1LT (new Jun 2002): Summit White / 3.4 L V6 / FWD / Cassette-CD Combo /222.5k miles [13-JUN-2019]