Have you scanned the ABS computer for codes

Don’t have to it’s legendary symptom of these trucks. I’m going to change out both wheel speed sensors on my truck anyway a lot of the owners who own these trucks neglected them so it’s good to do some preventative maintenance.

@mcleodmarcel48 do you only have the three amigos? If you only have the TC, ABS, and HDC lights, it's more than likely not a wheel speed sensor. When you have a wheel speed sensor not reading, it kicks on the brake light, too. Check your wheel speed sensor connectors while you are at it. they get brittle and loose connection, throw voltage high or low codes. If you only have the three amigos, it's probably a shuttle valve switch issue. Bad ground, faulty shuttle valve switch, etc. There are 11 different reasons why the SLABS computer will throw warning lights with multiple causes to throw each code, so 40-50 different possibilities the lights are on.