can brake controller be put on new TV? Is OEM unit better?

Update..the particular truck I am looking at has the 5.3 v8, etc., but doesn't have the integrated controller .. it's a chevy .. dealer says adding an oem integrated controller as a dealer-installed option not possible...but, this particular truck (a holdover 2018) is deeply discounted.. anything 2019 with the max-tow package would be at least 10k more than what I'm looking at .. dealer can install an afermarket controller that wouldn't have any potential effect on warranty .. thoughts?