Brakes Locking

Hello,

Brake locking up could mean an issue with the ABS system of the vehicle.
It could be an issue with the electronic brake control module, which is part of the ABS system. It provides pressure to each wheel.

Typically, when there is ABS malfunction the ABS light get illuminated.
Is that light illuminated on the dash?
If so the first step would be to scan the vehicle and retrieve the ABS code(s).

Here is a helpful video on how to scan for ABS codes:

https://youtu.be/rTtAnsOlZU4

By retrieving the trouble codes, it can help with the diagnostic process.

Please let me know of any questions.
Thank you.