Hi I have a 2015 Chevy Silverado with the factory installed brake controller. When applying the brakes manually it will not lock up the brakes even with the gain set all the way up. Should my trailer brakes be adjusted?
You might want to pull one hub. Check for grease on inside flat surface. If you have greasable hubs sometimes the grease seals go bad and contaminate everything. Ask me how I know, had same experience