what causes Antilock brakes systems, the traction light to come on and the on 2003 GMC Sierra Denali

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
and the brakes to engage without me stepping on brakes.
(1) Answer
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you must scan abs and traction control module for codes to start with
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