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2017 GMC Sierra 1500 130,000 miles Active grille shutter error. How do l troubleshoot a faulty active grille shutter actuator? Anyone know how to cycle the actuator and/or how to to diagnose the problem? Thank you in advance,

2017 GMC Sierra 1500 Mirrors fold, doors lock unlock, and windows down when returning to pickup in parking lot. Hey, I figured it out. The dealership wanted 400.00 to troubleshooting the issue. It started out with the mirrors and windows. It ended up rolling the windows down after I left it in the parking lot. I replaced the key fob batteries, yes in both of my key fobs and guess what, no more problems! Enjoy