The wiring for a 2015 Buick Encore is # C56216 and won't be an included item with the Curt Class-I trailer hitch # C11527. The reason wiring harnesses do not come with the hitch is because some vehicles already have a trailer wiring harness so we make them available separately.
The hitch # C11527 comes with a complete hardware kit and instructions.
If you happen to need a ball mount and hitch ball, I recommend ball mount # C45520 and 2 inch hitch ball # C40018 or a 1-7/8 inch ball # C40001.... view full answer...
Yes, the Curt Trailer Hitch Receiver part # C11527 which is a fit for a 2016 Buick Encore comes with the pull wire used to pull the hardware into the frame. view full answer...