2016 GMC Terrain - Wipers won't wipe

Windshield wipers quit working.

First step, check the fuse.

If the fuse and relay is good, then most likely it’s the wiper motor that is bad.
keep your receipt if you get it fixed just in case they decide to include your vehicle in the recall.

General Motors Windshield Wiper Recall Investigated | CarComplaints.com