Yes, read the vehicle's owners manual on how to adjust the brake controller. Once it is set, you should rarely have to touch it.
You should also verify you have the appropriate relays for charging the trailer batteries and trailer brakes installed in the distribution box. I'm pretty sure my Suburban came with them in the glove box. Again, your owners manual will list where those are.
A & A parents of DD 2005, DS1 2007, DS2 2009
2011 Suburban 2500 6.0L 3.73 pulling 2011 Heartland North Trail 28BRS
2017 Subaru Outback 3.6R
2x 2023 Chevrolet Bolt EUV (Gray and Black Twins)