Adding Factory Trailer Brake Control

[ZooLander]

I saw that the stock brake controller that mounts in the dash is sold by Rock Auto. Anybody know if a re-flash is necessary for the plug to genuinely function? I'm sure it's there, hidden below the dash.

 

[IamSuper]

I saw that the stock brake controller that mounts in the dash is sold by Rock Auto. Anybody know if a re-flash is necessary for the plug to genuinely function? I'm sure it's there, hidden below the dash.

I dont think it needs a re-flash for the plug to function, it should work without any additional steps.