On my 2013 Cadillac XTS4, my windshield wipers do not work on the highest settin

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! We need to get those wipers swishing again! It sounds like there may be an issue with the wiper motor or the wiper control module. The highest speed setting typically requires the most power, so if the wipers stop in place when set to the highest speed, it could indicate a problem with power delivery to the wiper motor. Start by checking the wiper motor connections for any signs of damage or corrosion. If the connections look fine, it's possible that the wiper motor itself is faulty and needs to be replaced. If there is an issue with the wiper control module that regulates the wiper speeds, a diagnostic scan tool can help identify any error codes related to the wiper system, providing further insight into the problem. If you're unable to diagnose or fix the issue yourself, it's best to have a professional mechanic inspect and repair the wiper system to ensure proper functionality. If you have any other questions feel free to call us at 877-913-1554! We'll gladly find you a certified RepairPal shop in your area!